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0KWZ Rio Tinto Plc

59.16
0.00 (0.00%)
Last Updated: 01:00:00
Delayed by 15 minutes
Share Name Share Symbol Market Type Share ISIN Share Description
Rio Tinto Plc LSE:0KWZ London Ordinary Share RIO TINTO ADR REPTG ONE ORD SHS
  Price Change % Change Share Price Bid Price Offer Price High Price Low Price Open Price Shares Traded Last Trade
  0.00 0.00% 59.16 500 01:00:00
Industry Sector Turnover Profit EPS - Basic PE Ratio Market Cap
Miscellaneous Metal Ores,nec 54.86B 10.06B 8.0090 6.30 74.3B

Rio Tinto PLC Final Results (6316Q)

22/02/2023 7:00am

UK Regulatory


Rio Tinto (LSE:0KWZ)
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TIDMRIO

RNS Number : 6316Q

Rio Tinto PLC

22 February 2023

Rio Tinto delivers underlying EBITDA of $26.3 billion and total dividends of 492 US cents per share

22 February 2023

Rio Tinto Chief Executive Jakob Stausholm said: "We are building a stronger Rio Tinto and delivering against our four objectives. Our operational performance has improved, as evidenced by a number of second half records being set at our Pilbara iron ore mine and rail system. We are also investing for the future, doubling our stake in the Oyu Tolgoi copper-gold project in Mongolia through the acquisition of Turquoise Hill Resources, progressing the Rincon Lithium Project in Argentina and reaching milestone agreements that underpin the long-term success of our Pilbara iron ore business.

"We continue to focus on making lasting change to strengthen our workplace culture and to building better relationships with Indigenous peoples, communities and other partners. At all times we will seek to find better ways, in line with our purpose. We clearly have more to do but I am encouraged by the progress we are making.

"Despite challenging market conditions, we remain resilient because of the quality of our assets, our great people and the strength of our balance sheet. That is why we delivered strong financial results with underlying EBITDA of $26.3 billion, free cash flow of $9.0 billion and underlying earnings of $13.3 billion, after taxes and government royalties of $8.4 billion. This enables us to continue to invest in strengthening the business while also paying a total dividend of $8.0 billion, a 60% payout, in line with our policy.

"The uplift in our operational performance, strengthening of external relationships and investment in the long-term strength of the business ensure we will be able to continue to pay attractive dividends and invest in sustaining and growing our portfolio, while contributing to society's drive to net zero."

 
                                                                                                  Change        Change 
At year end                                       2022                    2021        2020       vs 2021       vs 2020 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
Net cash generated from operating 
 activities                                                                                         (36) 
 (US$ millions)                                 16,134                  25,345      15,875             %           2 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
Purchases of property, plant and equipment                                                           (9) 
 and intangible assets (US$ millions)            6,750                   7,384       6,189             %           9 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
                                                                                                    (49)           (4) 
Free cash flow(1) (US$ millions)                 9,010                  17,664       9,407             %             % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
                                                                                                    (13) 
Consolidated sales revenue (US$ millions)       55,554                  63,495      44,611             %          25 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
                                                                                                    (30) 
Underlying EBITDA(1) (US$ millions)             26,272                  37,720      23,902             %          10 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
Profit after tax attributable to owners 
 of Rio Tinto (net earnings) (US$                                                                   (41) 
 millions)                                      12,420                  21,094       9,769             %          27 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
Underlying earnings per share (EPS)(1)                                                              (38) 
 (US cents)                                      819.6                 1,321.1       769.6             %           6 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
                                                                                                    (38) 
Ordinary dividend per share (US cents)           492.0                   793.0       464.0             %           6 % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
                                                                                                   (100)         (100) 
Special dividend per share (US cents)                -                   247.0        93.0             %             % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
                                                                                                    (53)          (12) 
Total dividend per share (US cents)              492.0                 1,040.0       557.0             %             % 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
Net (debt)/cash(1) (US$ millions)              (4,188)                   1,576       (664) 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
Underlying return on capital employed 
 (ROCE)(1)                                         25%                     44%         27% 
------------------------------------------  ----------  ----------------------  ----------  ------------  ------------ 
 

(1) This financial performance indicator is a non-IFRS (as defined below) alternative performance measure (APM). It is used internally by management to assess the performance of the business and is therefore considered relevant to readers of this document. It is presented here to give more clarity around the underlying business performance of the Group's operations. APMs are reconciled to directly comparable IFRS financial measures on pages 69 to 78 . Our financial results are prepared in accordance with IFRS - see page 35 for further information. Footnotes are set out in full on page 17 .

-- We are committed to having a safe work environment, preventing catastrophic events and reducing injuries. We had a fourth year in a row of zero fatalities and our all-injury frequency rate has remained stable at 0.40. We continue to implement our safety maturity model which, as our blueprint for safety, describes the systems and behaviours we apply to create a strong safety culture.

Solid financial results in 2022, set against a context of record prices in 2021

-- $16.1 billion net cash generated from operating activities, 36% lower than 2021. This included items of a non-recurring nature which were not representative of the underlying strength of the performance of the business, which, in aggregate, reduced operating cash flow by around $2 billion. See page 5 for more detail. Free cash flow(1) of $9.0 billion included capital expenditure of $6.8 billion, which decreased 9% as we commissioned our current programme of Pilbara replacement projects, notably Gudai-Darri.

-- $12.4 billion of net earnings, 41% lower than 2021, reflected the movement in commodity prices, the impact of higher energy and raw materials prices on our operations, and higher rates of inflation on our operating costs and closure liabilities. Effective tax rate on net earnings of 30.9% compared with 27.7% in 2021, with the increase being primarily due to the $0.8 billion write down of deferred tax assets in the US.

-- $26.3 billion underlying EBITDA(1) was 30% below 2021, with an underlying EBITDA margin(1) of 45%.

-- $13.3 billion underlying earnings(1) (underlying EPS(1) of 819.6 US cents) were 38% below 2021.

-- $4.2 billion of net debt(1) at year end, compared with net cash(1) of $1.6 billion at the start of the year, primarily reflected the free cash flow(1) of $9.0 billion, offset by $11.7 billion of cash returns to shareholders and $3.8 billion for the acquisitions of Turquoise Hill Resources (TRQ)(2) and Rincon Lithium Project.

-- $8.0 billion full-year dividend, equivalent to 492 US cents per share. This represents 60% of underlying earnings, in line with our shareholder returns policy.

Delivering on our strategy

-- We have put climate change and the low-carbon transition at the heart of our strategy. We are decarbonising our assets; helping our customers decarbonise by developing new products and technologies; and growing in materials enabling the energy transition. We will deliver our strategy through four clear objectives, which guide how we operate. Progressing our strategy and four objectives will ensure that we provide the materials the world needs while maximising shareholder returns and strengthening our position as a partner of choice for our customers and other key stakeholders.

-- We continue our work on social licence to restore trust and rebuild relationships, particularly with Indigenous peoples, with an absolute determination to achieve impeccable ESG credentials:

We are implementing all recommendations from the comprehensive external review of our workplace culture publi shed in February to ensure that everyone at Rio Tinto has a safe, respectful and inclusive workplace. Some immediate actions include training 91% of more than 7,000 leaders in 2022 in the foundations of building psychological safety, exceeding our target of 80%.

We increased our gender diversity by 1.4 percentage points to 22.9%, but fell short of our target to raise female representation by two percentage points. The increases were distributed across all levels of the organisation with female senior leaders increasing from 27.4% to 28.3%. We have also increased the number of Indigenous leaders in our workforce to 46 (November 2020: 6), through internal promotion and recruitment.

In October, we published our second Communities & Social Performance (CSP) progress report on actions addressing the 2020 Board Review of Cultural Heritage Management. It includes direct feedback from the Pilbara Traditional Owners and details the actions the company has taken to rebuild relationships with Indigenous peoples and external stakeholders . We are moving to a model of co-management of Country in our Pilbara iron ore business, and we are updating agreements with Indigenous peoples. In May, we signed a Heads of Agreement with the Puutu Kunti Kurrama and Pinikura (PKKP) people which will guide the co-management of Puutu Kunti Kurrama and Pinikura country where mining takes place. In November, we agreed with the PKKP Aboriginal Corporation to create the Juukan Gorge Legacy Foundation as part of a remedy agreement relating to the destruction of the rock shelters at Juukan Gorge in May 2020. We also signed an updated agreement with Yindjibarndi Aboriginal Corporation in Western Australia in November and signed the first agr eement with the Pekuakamiulnuatsh First Nation in Quebec in December.

-- To achieve our objective of becoming the best operator, we continue to roll out the Safe Production System (SPS). We achieved our SPS deployment target for 2022 with 30 deployments across 16 sites, which resulted in improved performance at those sites. Roll-outs are ongoing to continuously improve safety, strengthen employee engagement and sustainably lift operational performance across our global portfolio.

-- We made significant progress with our objective to excel in development with the following key milestones in the year:

we delivered first ore from Gudai-Darri, our first greenfield iron ore mine in the Pilbara in more than a decade. The ramp-up continues to progress as planned, with the 43 million tonne per year capacity expected to be reached on a sustained basis during 2023.

we agreed to enter a joint venture with China Baowu Steel Group Co. Ltd with respect to the Western Range iron ore project in the Pilbara, investing $2 billion ($1.3 billion Rio Tinto share(3) ) to develop the 25 million tonne per year capacity project. We have received all primary environmental and Australian Government approvals, while Chinese regulatory approvals continue to progress as planned. The joint venture is anticipated to commence in March, once the operational elements of the JV are in place. Rio Tinto commenced early works site mobilisation and awarded major contracts.

we agreed , together with Wright Prospecting Pty Ltd, to modernise the joint venture covering the Rhodes Ridge project in the East Pilbara. The participants have commenced an Order of Magnitude study which will consider development of an operation before the end of the decade with initial plant capacity of up to 40 million tonnes annually, subject to receipt of relevant approvals.

we fired 19 drawbells in 2022 from the Hugo North copper-gold underground mine at Oyu Tolgoi in Mongolia. Drawbell progression accelerated as a result of improvement initiatives, bringing projected first sustainable production from Panel 0 forward to the first quarter of 2023. This followed the comprehensive agreement announced on 25 January 2022, which reset the relationship between partners and resulted in the start of underground operations.

we c omplete d the purchase of non-controlling interests in TRQ for $3.1 billion(2) , simplifying ownership of the Oyu Tolgoi mine, significantly strengthening our copper portfolio and demonstrating our long-term commitment to the project and to Mongolia.

following completion of the $825 million Rincon acquisition, the Board approved $194 million to develop a small starter battery-grade lithium carbonate plant with a capacity of 3,000 tonnes per year. The investment includes early works to support a full-scale operation. Construction activities progressed on phase one camp facilities with rooms for 250 persons completed. Airstrip permits were received and contractors mobilised. First saleable production is expected in the first half of 2024.

we increased our exploration and evaluation spend by 24% to $897 million in 2022, as we ramped up our activities in Guinea, Argentina and Australia.

Progress towards our Scope 1 and 2 emissions targets

 
Mt CO(2) e          2022  2021  2018* 
------------------  ----  ----  ----- 
Scope 1 emissions   22.8  22.8   23.7 
------------------  ----  ----  ----- 
Scope 2 emissions    7.5   8.2    8.9 
------------------  ----  ----  ----- 
Total               30.3  31.0   32.5 
------------------  ----  ----  ----- 
 

*Adjusted 2018 baseline due to divestments and acquisitions. Actual emissions in 2018 were 33.7Mt CO(2) e. Figures are more precise than the rounded numbers shown.

-- Our Scope 1 and 2 emissions targets of 15% reductions by 2025 and 50% by 2030 are aligned with 1.5degC - the stretch goal of the Paris Agreement - and are really challenging. In contrast to many of our peers, about 80% of our emissions are driven by processing and producing metals and minerals which are high temperature, hard-to-abate activities. The remaining 20% are from our mining operations. The low-carbon transition is complex: developing new technologies and implementing major projects to decarbonise our business will take time.

-- In 2022, our Scope 1 and 2 emissions were 30.3Mt CO(2) e (31.0Mt in 2021), a reduction of 7% below our 2018 baseline. This is primarily the result of switching to renewable power at Kennecott and Escondida in prior years, as well as lower than planned production from the Kitimat and Boyne aluminium smelters in 2022. We did not advance the actual implementation of our abatement projects as fast as we would have liked last year, so our capital expenditure on decarbonisation projects was $94 million, lower than we anticipated when we set our targets. Challenges have included late delivery of equipment, resourcing constraints impacting study progress, construction and commissioning delays and project readiness.

-- In response, we established six abatement programmes, with dedicated people, to focus on the decarbonisation challenges that cut across our product groups: repowering our Pacific Aluminium Operations, renewables, aluminium anodes (ELYSIS(TM) ), alumina process heat, minerals processing and diesel transition. We are building capability and gaining a deeper understanding of our decarbonisation challenge (both constraints and opportunities), and our related operational expenditure increased to approximately $140 million in 2022. As a result, we are better placed to deliver the complex and large-scale structural changes to our energy system needed to achieve our 2030 target.

-- Given the long lead times for some of these projects, we established one additional programme to increase our investments in Nature-based Solutions projects and now expect these to make a more significant contribution to our targets. If done well, these projects can play a substantial role in addressing carbon emissions and biodiversity loss, while also providing benefits to local communities. Our people working on these '6+1' abatement programmes, along with our substantial investments in technology, will drive the innovation and transformation needed to accelerate our low carbon transition and ensure the long-term resilience of our business.

-- Our 2022 Climate Change Report is available on our website, riotinto.com.

Resilient cash flow from operations

 
                                                                      Year ended                     Year ended 
                                                                     31 December                    31 December 
                                                                            2022                           2021 
                                                                            US$m                           US$m 
--------------------------------------------------  ----------------------------  ----------------------------- 
Net cash generated from operating activities                              16,134                         25,345 
--------------------------------------------------  ----------------------------  ----------------------------- 
Purchases of property, plant and equipment and 
 intangible assets                                                       (6,750)                        (7,384) 
--------------------------------------------------  ----------------------------  ----------------------------- 
Sales of property, plant and equipment                                         -                             61 
--------------------------------------------------  ----------------------------  ----------------------------- 
Lease principal payments                                                   (374)                          (358) 
--------------------------------------------------  ----------------------------  ----------------------------- 
Free cash flow(1)                                                          9,010                         17,664 
--------------------------------------------------  ----------------------------  ----------------------------- 
Disposals                                                                     80                              4 
--------------------------------------------------  ----------------------------  ----------------------------- 
Cash receipt from sale of Cortez royalty                                     525                              - 
--------------------------------------------------  ----------------------------  ----------------------------- 
Dividends paid to equity shareholders                                   (11,727)                       (15,357) 
--------------------------------------------------  ----------------------------  ----------------------------- 
Acquisitions relating to Rincon and McEwen Copper                          (850)                              - 
--------------------------------------------------  ----------------------------  ----------------------------- 
Purchase of the minority interest in Turquoise 
 Hill Resources Ltd(2)                                                   (2,961)                              - 
--------------------------------------------------  ----------------------------  ----------------------------- 
Other                                                                        159                           (71) 
--------------------------------------------------  ----------------------------  ----------------------------- 
(Decrease)/Increase in net (debt)/cash(1)                                (5,764)                          2,240 
--------------------------------------------------  ----------------------------  ----------------------------- 
 

Footnotes are set out in full on page 17 .

-- $16.1 billion in net cash generated from operating activities, 36% lower than 2021, was primarily driven by price movements for our major commodities and a $0.5 billion rise in working capital, primarily due to elevated prices for raw materials in aluminium inventory. We also incurred some items of a non-recurring nature which were not representative of the underlying strength of the performance of the business. These comprised; higher tax payments (relative to profit) in 2022 as a result of a $1.1 billion (A$1.5 billion) final payment to the Australian Taxation Office (ATO) in respect of 2021 profits; $0.4 billion (A$0.6 billion) settlement with the ATO in respect of 12 historical years; and $0.4 billion of cash losses from currency hedges on our external dividends. At the end of 2022, we had no material outstanding tax payable on Australian profits.

-- We made some significant investments in growth with the $0.8 billion acquisition of Rincon and the $3.0 billion(2) purchase of non-controlling interests in TRQ (including transaction costs), giving us a 66% shareholding in the Oyu Tolgoi copper-gold mine, our largest growth project. Our capital expenditure of $6.8 billion encompassed $0.6 billion of growth capital, $2.2 billion of replacement capital, $3.9 billion of sustaining capital and $0.1 billion of decarbonisation spend. We funded our capital expenditure from operating activities and expect to continue funding our capital programme from internal sources, except for the Oyu Tolgoi underground development, which is project-financed.

-- $11.7 billion of dividends paid in 2022, being the 2021 final ordinary and special dividends paid in April 2022 ($7.6 billion) and the 2022 interim ordinary dividend paid in September ($4.1 billion), including foreign exchange impacts.

-- The above movements, together with disposals including the $525 million of cash received from the sale of the gross production royalty at the Cortez Complex in Nevada, USA (Cortez royalty), resulted in net cash(1) decreasing by $5.8 billion in 2022, and gave rise to net debt(1) of $4.2 billion at 31 December 2022.

Guidance

-- In 2023, we expect our share of capital investment (refer to APMs on page 75 and 76) to be around $8.0 billion (previously $8.0 to $9.0 billion), including growth capital of around $2.0 billion, depending on the ramp-up of spend at Simandou. In 2024 and 2025, this rises to $9.0 to $10.0 billion per year, including the ambition to invest up to $3.0 billion in growth per year, depending on opportunities. Each year also includes sustaining capital of around $3.5 billion, of which around $1.5 billion a year is for Pilbara iron ore (subject to ongoing inflationary pressure and exchange rates) and $2.0 to $3.0 billion of replacement capital. Around 40% of our share of capital investment is denominated in Australian dollars. Guidance includes around $1.5 billion over the next three years on decarbonisation projects, mainly relating to Pilbara renewables: this will accelerate thereafter, bringing our best estimate to around $7.5 billion, in aggregate, out to 2030. This remains subject to Traditional Owner and other stakeholder engagement, regulatory approvals and technology developments.

-- Effective tax rate on underlying earnings is expected to be around 30% in 2023.

 
Unit costs                                                       2022 Actuals                2023 Guidance 
------------------------------------------------  ---------------------------  --------------------------- 
Pilbara iron ore unit cash costs, free on board 
 (FOB) basis - US$ per wet metric tonne(4)                               21.3                    21.0-22.5 
------------------------------------------------  ---------------------------  --------------------------- 
Australian dollar exchange rate                                          0.69                         0.70 
------------------------------------------------  ---------------------------  --------------------------- 
Copper C1 unit costs (includes Kennecott, Oyu 
 Tolgoi and Escondida) - US cents per lb                                  163                      160-180 
------------------------------------------------  ---------------------------  --------------------------- 
 
 
Production (Rio Tinto share, unless otherwise 
 stated)                                        2022 Actuals  2023 Guidance 
----------------------------------------------  ------------  ------------- 
Pilbara iron ore (shipments, 100% basis) (Mt)            322     320 to 335 
Bauxite (Mt)                                              55       54 to 57 
Alumina (Mt)                                             7.5     7.7 to 8.0 
Aluminium (Mt)                                           3.0     3.1 to 3.3 
Mined copper (kt)                                        521  650 to 710(5) 
Refined copper (kt)                                      209     180 to 210 
Diamonds (M carats)                                      4.7     3.0 to 3.8 
Titanium dioxide slag (Mt)                               1.2     1.1 to 1.4 
IOC(6) iron ore pellets and concentrate (Mt)            10.3   10.5 to 11.5 
Boric oxide equivalent (Mt)                              0.5           0.5 
----------------------------------------------  ------------  ------------- 
 

Footnotes set out in full on page 17 .

-- Production and unit cost guidance is consistent with our Fourth Quarter Operations Review released on 17 January 2023.

-- Iron ore shipments and bauxite production guidance remain subject to weather and market conditions. Pilbara shipments guidance remains subject to progressing the ramp-up from new mines and management of cultural heritage.

Underlying EBITDA and underlying earnings by product group

 
                                         Underlying                                 Underlying 
                                           EBITDA                                    earnings 
                               ------------------------------             ------------------------------ 
                                         2022            2021     Change            2022            2021        Change 
Year ended 31 December                   US$m            US$m          %            US$m            US$m% 
-----------------------------  --------------  --------------  ---------  --------------  -------------- ----------- 
                                                                    (33)                                          (35) 
Iron Ore                               18,612          27,592          %          11,182          17,323             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                    (16)                                          (40) 
Aluminium                               3,672           4,382          %           1,472           2,468             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                    (40)                                          (67) 
Copper                                  2,376           3,969          %             521           1,579             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                     (7)                                           (4) 
Minerals                                2,419           2,603          %             849             888             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                    (30)                                          (37) 
Reportable segment total               27,079          38,546          %          14,024          22,258             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                    (43)                                           305 
Other operations                         (16)            (28)          %           (340)            (84)             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                    (43) 
Inter-segment transactions                 24              42          %              26              19          37 % 
Central pension costs, 
 share-based 
 payments, insurance and                                             243                                           181 
 derivatives                              377             110          %             374             133             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
Restructuring, project and 
 one-off                                                             116 
 costs                                  (173)            (80)          %            (87)            (51)          71 % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
Other central costs                     (766)           (613)       25 %           (651)           (585)          11 % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
Central exploration and                                              (2)                                           (3) 
 evaluation                             (253)           (257)          %           (209)           (215)             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                                                                 (245) 
Net interest                                                                         138            (95)             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
                                                                    (30)                                          (38) 
Total                                  26,272          37,720          %          13,275          21,380             % 
-----------------------------  --------------  --------------  ---------  --------------  --------------  ------------ 
 

Underlying EBITDA and underlying earnings are APMs used by management to assess the performance of the business, and provide additional information which investors may find useful. APMs are reconciled to directly comparable IFRS financial measures on pages 69 to 78 .

Central and other costs

Pre-tax central pension costs, share-based payments, insurance and derivatives were a $377 million credit compared with a $110 million credit in 2021, reflecting gains on derivatives recognised in 2022 of $132 million, compared to derivative losses recognised in 2021 of $97 million, along with lower central pension costs.

On a pre-tax basis, restructuring, project and one-off central costs were 116% higher than 2021 mainly associated with corporate projects, in particular workstreams surrounding Everyday Respect.

Other central costs of $766 million were 25% higher than in 2021, reflecting the Group's investment in the rollout of SPS across the Group, our enhanced capability to progress our ESG and CSP objectives and investment in technology, R&D and associated partnerships.

Net interest increased $233 million to a credit of $138 million due to higher interest rates, an increase in cash balances through the year and the absence of losses on early redemption of bonds recorded in 2021.

Continuing to invest in greenfield exploration

We have a strong portfolio of greenfield exploration projects in early exploration and studies stages, with activity in 18 countries across seven commodities. This is reflected in our pre-tax central spend of $253 million in 2022. The bulk of this exploration expenditure was focused on copper projects in Australia, Colombia, Namibia, Peru, the United States and Zambia; diamonds in Angola; and heavy mineral sands projects in Australia and South Africa. Exploration is ongoing for nickel in Canada and Finland and in lithium across all regions, with opportunities emerging in the United States and Africa. Mine-lease exploration continued at Rio Tinto managed businesses, including Pilbara Iron in Australia, Diavik in Canada and Cape York bauxite operations in Australia.

Commentary on financial results

To provide additional insight into the performance of our business, we report underlying EBITDA and underlying earnings. The principal factors explaining the movements in underlying EBITDA are set out in this table.

 
                                                              US$m 
----------------------------------------------  ------------------ 
2021 underlying EBITDA                                      37,720 
----------------------------------------------  ------------------ 
Prices                                                     (8,101) 
----------------------------------------------  ------------------ 
Exchange rates                                                 801 
----------------------------------------------  ------------------ 
Volumes and mix                                                606 
----------------------------------------------  ------------------ 
General inflation                                          (1,478) 
----------------------------------------------  ------------------ 
Energy                                                     (1,169) 
----------------------------------------------  ------------------ 
Operating cash unit costs                                  (2,202) 
----------------------------------------------  ------------------ 
Higher exploration and evaluation expenditure                (171) 
Non-cash costs/other                                           266 
----------------------------------------------  ------------------ 
2022 underlying EBITDA                                      26,272 
----------------------------------------------  ------------------ 
 

Solid financial results impacted by significant movements in commodity prices

We saw significant movement in pricing for our commodities, amidst growing recession fears and a decline in consumer confidence.

Movements in commodity prices resulted in a $8,101 million decline in underlying EBITDA overall compared with 2021. This was primarily from lower iron ore prices ($9,155 million) and lower London Metal Exchange (LME) copper prices and a negative provisional pricing impact ($733 million). This was partly offset by a price uplift for our Aluminium business ($886 million), driven by a first-half rise in LME prices, improved product premiums and higher alumina pricing, which fell away sharply in the second half. We have included a table of prices and exchange rates on page 79 .

The monthly average Platts index for 62% iron fines converted to a Free on Board (FOB) basis was 25% lower on average compared with 2021.

The average LME price for copper was 6% lower, while the average LME aluminium price was 9% higher, compared with 2021. The gold price was flat compared with 2021.

The midwest premium duty paid for aluminium in the US averaged $655 per tonne, 12% higher than in 2021.

Weaker local currencies during 2022

Compared with 2021, on average, the US dollar strengthened by 8% against the Australian dollar and by 4% against the Canadian dollar. Currency movements increased underlying EBITDA by $801 million relative to 2021.

Improvement in sales volumes and mix

Higher sales volumes and changes in product mix across the portfolio increased underlying EBITDA by $606 million compared to 2021. T his was mostly attributable to increased iron ore sales from the ramp-up of Gudai-Darri along with higher portside sales in China, and favourable value-added product premiums for our Aluminium business.

Impact of rising inflation and significantly higher energy prices

Average movements in energy prices compared with 2021 reduced underlying EBITDA by $1,169 million, mainly due to higher diesel prices for our trucks, trains and ships. In addition, rising general price inflation across our global operations resulted in a $1,478 million reduction in underlying EBITDA, including $0.2 billion for the impact of higher than expected inflation on closure provisions (for closed or fully impaired sites and environmental liabilities).

Disciplined focus on costs offset some of the market-linked increases

We remained focused on cost control throughout the year, in particular maintaining discipline on fixed costs. However, a rise in our operating cash unit costs reduced underlying EBITDA by $2,202 million (on a unit cost basis) compared with 2021. This mainly reflected cyclical cost pressures from higher market-linked prices for raw materials, in particular in our Aluminium business. We also experienced fixed cost inefficiencies from lower volumes at our Pacific alumina refineries and at the Boyne aluminium smelter due to production disruptions. In addition, we increased resourcing in our iron ore business to support the ramp-up at Gudai-Darri and targeted investment in pit health and asset maintenance across the Pilbara.

Increasing our global exploration and evaluation activity

We increased our exploration and evaluation expenditure by $171 million, or 24%, to $897 million. This was mainly attributable to increased activity at the Simandou iron ore project in Guinea and the Rincon Lithium Project in Argentina.

Non-cash costs/other

Movements in non-cash costs, one-off and other items increased underlying EBITDA by $266 million compared with 2021. This mainly reflected the acquisition of the remaining 40% of Diavik in November 2021 (+$163 million), lower incremental COVID-19 costs (+$123 million), gain on asset sale at Kennecott (+$133 million) and lower charges to the income statement on updates to closure cost estimates relating to closed and legacy sites (+$166 million). This was partially offset by reduced capacity at the Kitimat aluminium smelter (-$329 million) as ramp-up activities progressed in 2022 following the strike which commenced in July 2021.

Net earnings

The principal factors explaining the movements in underlying earnings and net earnings are set out below.

 
                                                                                  US$m 
------------------------------------------------------------------  ------------------ 
2021 net earnings                                                               21,094 
------------------------------------------------------------------  ------------------ 
Total changes in underlying EBITDA                                            (11,448) 
------------------------------------------------------------------  ------------------ 
Increase in depreciation and amortisation (pre-tax) in underlying 
 earnings                                                                        (319) 
------------------------------------------------------------------  ------------------ 
Increase in interest and finance items (pre-tax) in underlying 
 earnings                                                                      (1,112) 
------------------------------------------------------------------  ------------------ 
Decrease in tax on underlying earnings                                           3,949 
------------------------------------------------------------------  ------------------ 
Decrease in underlying earnings attributable to outside interests                  825 
------------------------------------------------------------------  ------------------ 
Total changes in underlying earnings                                           (8,105) 
------------------------------------------------------------------  ------------------ 
Changes in exclusions from underlying earnings: 
------------------------------------------------------------------  ------------------ 
Write-off of Federal deferred tax assets in the United States                    (820) 
------------------------------------------------------------------  ------------------ 
Movement in exchange differences and gains/losses on derivatives                 (683) 
------------------------------------------------------------------  ------------------ 
Gain recognised by Kitimat relating to LNG Canada's project                      (230) 
------------------------------------------------------------------  ------------------ 
Loss on disposal of interest in subsidiary                                       (105) 
------------------------------------------------------------------  ------------------ 
Movement in impairment charges net of reversals                                    145 
------------------------------------------------------------------  ------------------ 
Movement in closure estimates (non-operating and fully impaired 
 sites)                                                                            793 
------------------------------------------------------------------  ------------------ 
Gain on sale of Cortez royalty                                                     331 
------------------------------------------------------------------  ------------------ 
2022 net earnings                                                               12,420 
------------------------------------------------------------------  ------------------ 
 

Depreciation and amortisation, net interest and finance items, tax and non-controlling interests

The depreciation and amortisation charge was $319 million higher than 2021, mainly due to an increase in capitalised closure costs in 2021 at a number of our Aluminium sites. Our capital base was also higher in Iron Ore, Copper and Minerals as a result of our investment activities. This was partially offset by a stronger US dollar against the Australian dollar.

Interest and finance items (pre-tax) were higher mainly as a result of a $1,101 million increase in amortisation of discount on provisions, as higher inflation had an impact on the Group's closure and restoration/environmental liabilities. The amortisation charge of $1,517 million (2021: $415 million) incorporates an estimate of inflation at the start of each six-month reporting period. At the end of each half year we update the underlying cash flows for the latest estimate of experienced inflation for the current financial year and record this as "changes to existing provisions". For operating sites this adjustment usually results in a corresponding adjustment to Property, plant and equipment, and for closed and fully impaired sites the adjustment is charged or credited to the Income statement. These income statement amounts are included within underlying earnings except for the re-measurement of provisions for legacy sites that were never operated by Rio Tinto.

The 2022 effective corporate income tax rate on pre-tax earnings, excluding equity accounted units, was 30.9%, compared with 27.7% in 2021. The effective tax rate on pre-tax earnings in Australia was 31.7% in 2022, compared with 30.7% in 2021. We r eached agreement with the Australian Taxation Office (ATO) on all tax matters in dispute. As part of this agreement, in August we paid the ATO additional tax of A$613 million for the period from 2010 to 2021. Over this 12-year period, we paid nearly A$80 billion in tax and royalties in Australia.

Items excluded from underlying earnings

The Inflation Reduction Act of 2022 in the United States may give rise to investment credits on some of our existing projects, with longer dated projects potentially becoming more favourable. However, it also includes a new Corporate Alternative Minimum Tax regime, which has led to the Group reviewing the carrying value of US Federal deferred tax balances. The resulting $820 million write down of Federal deferred tax assets has been excluded from underlying earnings on the grounds of materiality.

In 2022, we recognised an exchange and derivative loss of $137 million. This includes losses of $373 million on revaluation of certain derivatives which do not qualify for hedge accounting. These include currency hedges relating to our external dividends, and exchange losses of $262 million on US dollar debt in non-US dollar functional currency Group companies, partly offset by $478 million of exchange gains on intragroup balances. These losses compared with a 2021 gain of $546 million, giving rise to an unfavourable year-on-year movement of $683 million. The exchange gains are largely offset by currency translation losses recognised in equity. The quantum of US dollar debt is largely unaffected and we will repay it from US dollar sales receipts.

During 2022, LNG Canada elected to terminate their option to purchase additional land at Kitimat, Canada. This resulted in a $106 million gain which includes the release of deferred income and receipt of a cancellation fee payment. During 2021, we recognised a $336 million gain on recognition of a new wharf at Kitimat that was built and paid for by LNG Canada. These gains have been excluded from underlying earnings consistent with prior years, as they are part of a series of material transactions unrelated to the core business.

Impairment charges, net of reversals, decreased by $145 million compared with 2021. In 2022, we impaired the remaining full value of the Boyne Smelter in Queensland, Australia, as a result of reduced capacity and the high cost of energy from the coal-fired power station impacting economic performance. In 2022, we also completed the sale of the Roughrider uranium undeveloped project in Saskatchewan, Canada, which resulted in a reversal of previous impairments.

There is a detailed explanation of the impairment process on pages 50 to 51 .

In 2022, we recognised $178 million in closure costs representing adjustments to the closure estimates relating to legacy sites where the disturbance preceded ownership by Rio Tinto, including inflationary increases to provisions for these sites in excess of the unwind of discount. This was $793 million lower than 2021 closure charges, which related to Energy Resources of Australia (ERA), Gove refinery and Diavik closure provision increases, and further increases at a number of the Group's legacy sites where the disturbance preceded our ownership.

In 2022, we completed the $525 million sale of a gold royalty which was retained following the disposal of the Cortez mine in 2008. The carrying value of the royalty at 31 December 2021 was $88 million, resulting in a post-tax gain of $331 million. This has been excluded from underlying earnings on the grounds of materiality.

Profit

Net earnings and underlying earnings refer to amounts attributable to the owners of Rio Tinto. The net profit attributable to the owners of Rio Tinto in 2022 was $12.4 billion (2021: $21.1 billion). We recorded a profit after tax in 2022 of $13.1 billion (2021: $22.6 billion) of which a profit of $0.7 billion (2021: $1.5 billion) was attributable to non-controlling interests.

Net earnings and underlying earnings

The differences between underlying earnings and net earnings are set out in this table (all numbers are after tax and exclude non-controlling interests).

 
                                                                         Year ended                   Year ended 
                                                                        31 December                  31 December 
                                                                               2022                         2021 
                                                                               US$m                         US$m 
-----------------------------------------------------  ----------------------------  --------------------------- 
Underlying earnings                                                          13,275                       21,380 
-----------------------------------------------------  ----------------------------  --------------------------- 
Items excluded from underlying earnings 
-----------------------------------------------------  ----------------------------  --------------------------- 
Impairment charges net of reversals                                            (52)                        (197) 
-----------------------------------------------------  ----------------------------  --------------------------- 
Gains recognised by Kitimat relating to LNG Canada's 
 project                                                                        106                          336 
-----------------------------------------------------  ----------------------------  --------------------------- 
Loss on disposal of interest in subsidiary                                    (105)                            - 
-----------------------------------------------------  ----------------------------  --------------------------- 
Foreign exchange and derivative gains on net 
 debt and intragroup balances and derivatives 
 not qualifying for hedge accounting                                          (137)                          546 
-----------------------------------------------------  ----------------------------  --------------------------- 
Change in closure estimates (non-operating and 
 fully impaired sites)                                                        (178)                        (971) 
Gain on sale of Cortez royalty                                                  331                            - 
-----------------------------------------------------  ----------------------------  --------------------------- 
Write-off of Federal deferred tax assets in the 
 United States                                                                (820)                            - 
Net earnings                                                                 12,420                       21,094 
-----------------------------------------------------  ----------------------------  --------------------------- 
 

On pages 72 to 73 there is a detailed reconciliation from underlying earnings to net earnings, including pre-tax amounts and additional explanatory notes. The differences between profit after tax and underlying EBITDA are set out in the table on page 47 .

Balance sheet

Net cash(1) reduced by $5.8 billion in 2022, resulting in a net debt(1) position of $4.2 billion at 31 December 2022. This reflected $11.7 billion returned to shareholders in the year, $3.0 billion (2) acquisition of the remaining non-controlling interest of TRQ and $0.8 billion acquisition of the Rincon Lithium Project, partially offset by $9.0 billion of free cash flow and the $0.5 billion received from the sale of the Cortez royalty.

Our net gearing ratio(1) (net debt/ (cash) to total capital) was 7% at 31 December 2022 (31 December 2021: (3)%), see page 78 .

Our total financing liabilities excluding net debt derivatives at 31 December 2022 (see page 77 ) were $12.3 billion (31 December 2021: $13.5 billion) and the weighted average maturity was around 11 years. At 31 December 2022, approximately 77% of these liabilities were at floating interest rates (85% excluding leases). The maximum amount within non-current borrowings maturing in any one calendar year is $1.5 billion, which matures in 2024.

We had $8.8 billion in cash and cash equivalents plus other short-term cash investments at 31 December 2022 (31 December 2021: $15.2 billion).

Provision for closure costs

At 31 December 2022, provisions for close-down and restoration costs and environmental clean-up obligations were $15.8 billion (31 December 2021: $14.5 billion). The principal movements during the year were the result of a remeasurement of underlying cash flows, including the effect of inflation. This was recorded as an increase to mining properties for current operating sites ($0.5 billion) and as a charge to profit for legacy sites ($0.5 billion). Also contributing to the increase in the provision was amortisation of discount ($1.5 billion) which includes the effect of higher inflation in the year. These increases were partly offset by utilisation of the provision through spend (-$0.6 billion) and a weaker Australian dollar, Canadian dollar and South African rand against the US dollar (-$0.7 billion).

Of the $15.8 billion in provisions, $11.6 billion relates to operating sites and $4.2 billion is for legacy sites. Remaining lives of operations and infrastructure range from one to over 50 years with an average for all sites, weighted by present closure obligation, of around 15 years (2021: 16 years).

The provisions are based on risk-adjusted real cash flows using a real-rate discount rate of 1.5% to reflect obligations at the present value of cash flows on 31 December 2022 terms .

In 2023, we expect to utilise around $0.8 billion of the provisions as we advance our closure activities at Argyle, ERA, Gove alumina refinery and legacy sites.

Our shareholder returns policy

The Board is committed to maintaining an appropriate balance between cash returns to shareholders and investment in the business, with the intention of maximising long-term shareholder value.

At the end of each financial period, the Board determines an appropriate total level of ordinary dividend per share. This takes into account the results for the financial year, the outlook for our major commodities, the Board's view of the long-term growth prospects of the business and the company's objective of maintaining a strong balance sheet. The intention is that the balance between the interim and final dividend be weighted to the final dividend.

The Board expects total cash returns to shareholders over the longer term to be in a range of 40% to 60% of underlying earnings in aggregate through the cycle. Acknowledging the cyclical nature of the industry, it is the Board's intention to supplement the ordinary dividend with additional returns to shareholders in periods of strong earnings and cash generation.

60% payout ratio on the ordinary dividend

 
                                                                        2022             2021 
                                                                       US$bn            US$bn 
-----------------------------------------------------------  ---------------  --------------- 
Ordinary dividend 
-----------------------------------------------------------  ---------------  --------------- 
Interim                                                                  4.3              6.1 
-----------------------------------------------------------  ---------------  --------------- 
Final                                                                    3.7              6.7 
-----------------------------------------------------------  ---------------  --------------- 
Full-year ordinary dividend                                              8.0             12.8 
-----------------------------------------------------------  ---------------  --------------- 
Payout ratio on ordinary dividend                                        60%              60% 
-----------------------------------------------------------  ---------------  --------------- 
Additional returns 
-----------------------------------------------------------  ---------------  --------------- 
Special dividend announced in July 2021, paid in September 
 2021                                                                    n/a              3.0 
-----------------------------------------------------------  ---------------  --------------- 
Special dividend announced in February 2022, paid 
 in April 2022                                                           n/a              1.0 
-----------------------------------------------------------  ---------------  --------------- 
Total cash returns to shareholders declared*                             8.0             16.8 
-----------------------------------------------------------  ---------------  --------------- 
Combined total as % of underlying earnings                               60%              79% 
-----------------------------------------------------------  ---------------  --------------- 
 

* Based on weighted average number of shares and declared dividends per share for the respective periods and excluding foreign exchange impacts on payment.

We determine dividends in US dollars. We declare and pay Rio Tinto plc dividends in pounds sterling and Rio Tinto Limited dividends in Australian dollars. The 2022 final dividend has been converted at exchange rates applicable on 21 February 2023 (the latest practicable date before the dividend was declared). American Depositary Receipt (ADR) holders receive dividends at the declared rate in US dollars.

 
Ordinary dividend per share declared              2022             2021 
-------------------------------------  ---------------  --------------- 
Rio Tinto Group 
-------------------------------------  ---------------  --------------- 
Interim (US cents)                              267.00           376.00 
-------------------------------------  ---------------  --------------- 
Final (US cents)                                225.00           417.00 
-------------------------------------  ---------------  --------------- 
Full-year (US cents)                            492.00           793.00 
Rio Tinto plc 
-------------------------------------  ---------------  --------------- 
Interim (UK pence)                              221.63           270.84 
-------------------------------------  ---------------  --------------- 
Final (UK pence)                                185.35           306.72 
-------------------------------------  ---------------  --------------- 
Full-year (UK pence)                            406.98           577.56 
Rio Tinto Limited 
-------------------------------------  ---------------  --------------- 
Interim (Australian cents)                      383.70           509.42 
-------------------------------------  ---------------  --------------- 
Final (Australian cents)                        326.49           577.04 
-------------------------------------  ---------------  --------------- 
Full-year (Australian cents)                    710.19         1,086.46 
-------------------------------------  ---------------  --------------- 
 
 
Special dividend per share declared    2022    2021 
------------------------------------  -----  ------ 
Rio Tinto Group 
------------------------------------  -----  ------ 
Interim (US cents)                      n/a  185.00 
------------------------------------  -----  ------ 
Final (US cents)                        n/a   62.00 
------------------------------------  -----  ------ 
Full-year (US cents)                    n/a  247.00 
------------------------------------  -----  ------ 
Rio Tinto plc 
------------------------------------  -----  ------ 
Interim (UK pence)                      n/a  133.26 
------------------------------------  -----  ------ 
Final (UK pence)                        n/a   45.60 
------------------------------------  -----  ------ 
Full-year (UK pence)                    n/a  178.86 
------------------------------------  -----  ------ 
Rio Tinto Limited 
------------------------------------  -----  ------ 
Interim (Australian cents)              n/a  250.64 
------------------------------------  -----  ------ 
Final (Australian cents)                n/a   85.80 
------------------------------------  -----  ------ 
Full-year (Australian cents)            n/a  336.44 
------------------------------------  -----  ------ 
 

The 2022 final ordinary dividend to be paid to our Rio Tinto Limited shareholders will be fully franked. The Board expects Rio Tinto Limited to be in a position to pay fully franked dividends for the foreseeable future.

On 20 April 2023, we will pay the 2022 final ordinary dividend to holders of ordinary shares and holders of ADRs on the register at the close of business on 10 March 2023 (record date). The ex-dividend date is 9 March 2023.

Rio Tinto plc shareholders may choose to receive their dividend in Australian dollars or New Zealand dollars, and Rio Tinto Limited shareholders may choose to receive theirs in pounds sterling or New Zealand dollars. Currency conversions will be based on the pound sterling, Australian dollar and New Zealand dollar exchange rates five business days before the dividend payment date. Rio Tinto plc and Rio Tinto Limited shareholders must register their currency elections by 28 March 2023.

We will operate our Dividend Reinvestment Plans for the 2022 final dividend (visit riotinto.com for details). Rio Tinto plc and Rio Tinto Limited shareholders' election notice for the Dividend Reinvestment Plans must be received by 28 March 2023. Purchases under the Dividend Reinvestment Plan are made on or as soon as practicable after the dividend payment date and at prevailing market prices. There is no discount available.

Capital projects

 
                                           Total 
                                        approved  Approved capital 
                                         capital         remaining 
Approved projects                           cost             to be 
 (Rio Tinto 100%                    (100% unless        spent from 
 owned unless                          otherwise         1 January 
 otherwise stated)                       stated)              2023  Status/Milestones 
---------------------------------  -------------  ----------------  -------------------------------------- 
Completed in 2022 
---------------------------------  -------------  ----------------  -------------------------------------- 
Investment in Gudai-Darri,                $3.1bn            $0.2bn  We delivered first ore in 
 a new production hub                                                June 2022. Production from 
 in the Pilbara region                                               the mine ramped up in the 
 of Western Australia.                                               second half of the year and 
 The investment incorporates                                         we expect Gudai-Darri to 
 a processing plant                                                  reach its nameplate capacity 
 and infrastructure                                                  of 43 million tonne per year 
 including a 166-kilometre                                           on a sustained basis during 
 rail line connecting                                                2023. The mine has an expected 
 the mine to our existing                                            life of more than 40 years. 
 network. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Investment in the Robe                    $1.0bn            $0.1bn  In the third quarter of 2022, 
 River Joint Venture                  (Rio Tinto        (Rio Tinto   Mesa A rectification works 
 (West Angelas C and                      share)            share)   were successfully completed, 
 D and Mesa B, C and                                                 with the plant operating 
 H at Robe Valley) in                                                at design rates. Final train 
 the Pilbara to sustain                                              load out tie-in works at 
 production capacity.                                                Mesa J were also completed, 
                                                                     with first ore achieved. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Investment in a second                    $0.8bn                 -  The new 16-kilometre tunnel 
 tunnel at the 1000MW                                                produced its first megawatt 
 Kemano hydropower facility                                          of electricity in July 2022 
 at Kitimat, British                                                 after construction was completed 
 Columbia, Canada, which                                             in May 2022. 
 will ensure the long-term 
 reliability of the 
 power supply to the 
 Kitimat smelter. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Ongoing 
---------------------------------  -------------  ----------------  -------------------------------------- 
Iron Ore 
---------------------------------  -------------  ----------------  -------------------------------------- 
Investment in the Western                 $1.3bn            $1.1bn  Announced in September 2022, 
 Range iron ore project,              (Rio Tinto        (Rio Tinto   the mine will have a production 
 a joint venture between               share)(3)            share)   capacity of 25 million tonnes 
 Rio Tinto (54%) and                                                 per year. The project includes 
 China Baowu Steel Group                                             construction of a primary 
 Co. Ltd (46%) in the                                                crusher and an 18-kilometre 
 Pilbara to sustain                                                  conveyor connection to the 
 production of the Pilbara                                           Paraburdoo processing plant. 
 Blend from Rio Tinto's                                              Early works construction 
 existing Paraburdoo                                                 commenced in 2022 and major 
 hub.                                                                contracts have been awarded 
                                                                     by Rio Tinto. First production 
                                                                     is anticipated in 2025. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Copper 
---------------------------------  -------------  ----------------  -------------------------------------- 
Phase two of the south                    $1.5bn            $1.1bn  Approved in December 2019, 
 wall pushback to extend                                             the investment will further 
 mine life at Kennecott                                              extend strip waste rock mining 
 by a further six years.                                             and support additional infrastructure 
 A $108 million investment                                           development. This will allow 
 in underground characterisation                                     mining to continue into a 
 studies is ongoing,                                                 new area of the orebody between 
 with $55 million in                                                 2026 and 2032. 
 development capital 
 approved to commence 
 underground mining. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Development of the                    $7.06bn(8)            $1.6bn  The project was originally 
 Oyu Tolgoi underground                                              approved in May 2016 for 
 copper/gold mine in                                                 $5.3 billion, with an additional 
 Mongolia (Rio Tinto                                                 $1.45 billion approved by 
 66%), which is expected                                             the Rio Tinto Board in December 
 to produce (from the                                                2020, following completion 
 open pit and underground)                                           of the Definitive Estimate. 
 an average of 500,000                                              By the end of 2022, a total 
 tonnes(7) of copper                                                 of 19 drawbells had been 
 per year from 2028                                                  fired. Progression accelerated 
 to 2036 and an average                                              as a result of improvement 
 of 350,000 tonnes(7)                                               initiatives implemented by 
 of copper per year                                                  the Oyu Tolgoi teams, bringing 
 for a further five                                                  projected first sustainable 
 years, compared with                                                production from Panel 0 forward 
 130,000 tonnes in 2022                                              to the first quarter of 2023. 
 (open pit).                                                         This followed the comprehensive 
                                                                     agreement between the Oyu 
                                                                     Tolgoi partners announced 
                                                                     in January 2022. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Minerals 
---------------------------------  -------------  ----------------  -------------------------------------- 
Development of the                        $0.5bn            $0.4bn  Approved in April 2019 to 
 Zulti South project                                                 underpin RBM's supply of 
 at Richards Bay Minerals                                            zircon and ilmenite over 
 (RBM) in South Africa                                               the life of the mine. The 
 (Rio Tinto 74%).                                                    project remains on full suspension. 
---------------------------------  -------------  ----------------  -------------------------------------- 
Development of the                        $2.4bn            $2.4bn  The Board committed the funding 
 greenfield Jadar lithium-borates                                    in July 2021, subject to 
 project in Serbia.                                                  receiving all relevant approvals, 
 The development will                                                permits and licences. We 
 include an underground                                              are focused on consultation 
 mine with associated                                                with all stakeholders to 
 infrastructure and                                                  explore all options following 
 equipment, including                                                the Government of Serbia's 
 electric haul trucks,                                               cancellation of the Spatial 
 as well as a beneficiation                                          Plan in January 2022. 
 chemical processing 
 plant. 
---------------------------------  -------------  ----------------  -------------------------------------- 
 

Future options

 
                                               Status 
---------------------------------------------  -------------------------------------------- 
Iron Ore: Pilbara brownfields 
---------------------------------------------  -------------------------------------------- 
Over the medium term, our Pilbara              In addition to Western Range (Greater 
 system capacity remains between                Paraburdoo), which has commenced 
 345 and 360 million tonnes per year.           early works construction, other 
 Meeting this range, and the planned            key projects to be delivered over 
 product mix, will require the approval         the next five years include Hope 
 and delivery of the next tranche               Downs 1 Sustaining (Hope Downs 2 
 of replacement mines.                          and Bedded Hilltop), West Angelas 
                                                Sustaining, Greater Nammuldi Sustaining 
                                                and Brockman 4 Sustaining (Brockman 
                                                Syncline 1). We continue to work 
                                                closely with local communities, 
                                                Traditional Owners and government 
                                                to progress approvals for the new 
                                                mining projects. 
---------------------------------------------  -------------------------------------------- 
Iron Ore: Rhodes Ridge 
---------------------------------------------  -------------------------------------------- 
In October, Rio Tinto (50%) and                The participants have commenced 
 Wright Prospecting Pty Ltd (50%)               an Order of Magnitude study, conducted 
 agreed to modernise the joint venture          by Rio Tinto, which will consider 
 covering the Rhodes Ridge project              the development of an operation 
 in the Eastern Pilbara, providing              before the end of the decade with 
 a pathway for development utilising            initial plant capacity of up to 
 Rio Tinto's rail, port and power               40 million tonnes annually, subject 
 infrastructure. Rhodes Ridge contains          to the receipt of relevant approvals. 
 5.8 billion tonnes of high-grade               We expect to complete the Rhodes 
 Mineral Resources at an average                Ridge Order of Magnitude study in 
 grade of 62.3% Fe. The project's               2023. 
 total resource, 6.7 billion tonnes 
 at an average grade of 61.6% Fe, 
 represents approximately one third 
 of our existing Resource base in 
 the Pilbara.(9) A resource-drilling 
 programme is currently underway 
 to support future project studies. 
---------------------------------------------  -------------------------------------------- 
Iron Ore: Simandou 
---------------------------------------------  -------------------------------------------- 
The Simandou iron ore project in               Negotiations towards the co-development 
 Guinea(10) contains one of the world's         of project infrastructure progressed 
 largest known undeveloped high-grade           further with the December signing 
 low-impurity iron ore deposits,                of a non-binding term sheet between 
 demand for which is increasing as              our Simfer joint venture, Baowu, 
 steelmakers look to reduce carbon              Winning Consortium Simandou (WCS) 
 emissions. Simandou is set to diversify        and the Government of Guinea(11) 
 our strong iron ore portfolio, complementing   . The term sheet further establishes 
 our high-grade Iron Ore Company                the co-development principles following 
 of Canada products and supporting              the incorporation of La Compagnie 
 the long-term attractiveness of                du TransGuinéen on 27 July 
 our Pilbara Blend(TM) offering.                2022, and is a pivotal next step 
                                                towards securing the shareholder 
                                                agreement, cost estimates and regulatory 
                                                authority approvals necessary to 
                                                progress the co-development of rail 
                                                and port facilities. 
---------------------------------------------  -------------------------------------------- 
Lithium: Rincon 
---------------------------------------------  -------------------------------------------- 
We completed the acquisition of                In July 2022, we approved $140 million 
 the Rincon Lithium Project in Salta            of investment and $54 million for 
 province, Argentina in March 2022.             early works to support a full-scale 
 Development of a small starter,                operation to be expensed through 
 battery-grade lithium carbonate                exploration and evaluation expenditure. 
 plant with a capacity of 3,000 tonnes          Construction activities progressed 
 per year is underway.                          on phase one camp facilities with 
                                                rooms for 250 persons completed. 
                                                Airstrip permits were received and 
                                                contractors mobilised. First saleable 
                                                production from the small starter 
                                                plant is expected in the first half 
                                                of 2024. 
---------------------------------------------  -------------------------------------------- 
Copper: Resolution 
---------------------------------------------  -------------------------------------------- 
The Resolution Copper project is               The US Forest Service continued 
 a proposed underground copper mine             work to progress the Final Environmental 
 in the Copper Triangle, in Arizona,            Impact Statement and complete actions 
 United States. It has the potential            necessary for the land exchange. 
 to supply up to 25% of US copper               We continued to advance partnership 
 demand.                                        discussions with several federally 
                                                recognised Native American Tribes 
                                                who are part of the formal consultation 
                                                process. 
---------------------------------------------  -------------------------------------------- 
Copper: Winu 
---------------------------------------------  -------------------------------------------- 
In late 2017, we discovered copper-gold        We continued to strengthen our relationships 
 mineralisation at the Winu project             and advanced agreement making with 
 in the Paterson Province in Western            our host Traditional Owners, the 
 Australia. In 2021, we reported                Martu and Nyangumarta groups. Planned 
 our first Indicated Mineral Resource.          drilling, fieldwork and study activities 
 The pathway is expected to take                continued, strengthening the development 
 longer than originally anticipated             pathway ahead of applications for 
 and remains subject to regulatory              regulatory and other required approvals. 
 and other required approvals. 
---------------------------------------------  -------------------------------------------- 
Aluminium: ELYSIS 
---------------------------------------------  -------------------------------------------- 
ELYSIS, our joint venture with Alcoa,          Construction of the first commercial-scale 
 supported by Apple, the Government             prototype cells is underway at our 
 of Canada and the Government of                Alma smelter and is expected to 
 Quebec, is developing a breakthrough           become operational in 2023. ELYSIS 
 inert anode technology that eliminates         aims to have its technology available 
 all direct greenhouse gases from               for installation from 2024 and production 
 the aluminium smelting process.                of larger volumes of carbon-free 
                                                aluminium approximately two years 
                                                later. 
---------------------------------------------  -------------------------------------------- 
 

Footnotes

1. This financial performance indicator is a non-IFRS (as defined below) alternative performance measure (APM). It is used internally by management to assess the performance of the business and is therefore considered relevant to readers of this document. It is presented here to give more clarity around the underlying business performance of the Group's operations. APMs are reconciled to directly comparable International Financial Reporting Standards (IFRS) financial measures on pages 69 to 78 . Our financial results are prepared in accordance with IFRS - see page 35 for further information.

2. Total consideration of $3,139 million for the minority interest in TRQ excludes transaction costs of $74 million. In 2022, we paid $2,928 million to shareholders and $33 million of transaction costs. In 2023, we expect to pay the remaining $41 million of transaction costs and approximately $211 million to dissenting shareholders, depending on the outcome and timing of dissent proceedings.

   3.   Rio Tinto share includes 100% of funding costs for Paraburdoo plant upgrades. 
   4.   Pilbara unit cash costs exclude COVID-19 costs (2022: $0.4 per tonne. 2021: $0.5 per tonne). 

5. Oyu Tolgoi production for 2022 remains on a 33.52% Rio Tinto share basis. Subsequent to Rio Tinto's acquisition of Turquoise Hill Resources which completed on 16 December, 2023 mined copper guidance now includes Oyu Tolgoi on a 100% consolidated basis and continues to reflect our 30% share of Escondida.

   6.   Iron Ore Company of Canada continues to be reported as Rio Tinto share. 

7. The 500ktpa target (stated as recovered metal) for the Oyu Tolgoi underground and open pit mines is underpinned 21% by Proved Ore Reserves and 79% by Probable Ore Reserves for the years 2028 to 2036. The 350ktpa production target for the following five years is underpinned 22% by Proved Ore Reserves and 78% by Probable Ore Reserves. These production targets have been scheduled from current mine designs by Competent Persons in accordance with the requirements of the Australasian Code for Reporting of Exploration Results, Minerals Resources and Ore Reserves, 2012 Edition (the JORC code).

8. A cost and schedule reforecast was performed in June 2022 and estimates that $7.06 billion is required to complete the Hugo North 1 project (an increase of $0.3 billion beyond the 2020 Definitive Estimate). The 2022 Reforecast excludes impacts of COVID-19 restrictions arising after June 2022. The 2022 reforecast remains subject to Oyu Tolgoi Board approval.

9. The Mineral Resource estimates for the Rhodes Ridge Joint Venture (JV) were reported in our 2020 Annual Report released to the Australian Securities Exchange (ASX) on 22 February 2021 (and form part of the Pilbara Mineral Resource estimates reported in our 2021 Annual Report released to the ASX on 24 February 2022). The Competent Persons responsible for reporting these Mineral Resource estimates were Mr P Savory, who is a Fellow of The Australasian Institute of Mining and Metallurgy, and Ms N Brajkovich and Mr C Kyngdon, who are Members of The Australasian Institute of Mining and Metallurgy. We are not aware of any new information or data that materially affects these Mineral Resource estimates and confirm that all material assumptions and technical parameters underpinning the estimate continue to apply and have not materially changed. The form and context in which the Competent Persons' findings are presented have not been materially modified from when they were reported. Mineral Resources are quoted in this release on a 100% basis, as dry in-situ tonnes.

10. The Simandou iron ore project operates under the Simfer joint venture where the Government of Guinea holds 15% and Simfer Jersey holds 85%. Simfer Jersey is owned by Rio Tinto (53%) and Chalco Iron Ore Holdings (CIOH) (47%). CIOH is owned by Chinalco (75%), Baowu (20%), China Civil Engineering Construction Corporation (CCECC) (2.5%) and China Harbour Engineering Company (CHEC) (2.5%). This structure has been in place since 2017.

11. This followed notification to Rio Tinto and the Government of Guinea of Baowu's earlier entry into a term sheet agreement with WCS in respect of an investment into WCS mine (blocks 1 and 2) and infrastructure vehicle - an agreement welcomed by Rio Tinto.

11.

Review of operations

Iron Ore

 
Year ended 31 December                                    2022             2021       Change 
---------------------------------------------  ---------------  ---------------  ----------- 
Pilbara production (million tonnes - 100%)               324.1            319.7          1 % 
---------------------------------------------  ---------------  ---------------  ----------- 
Pilbara shipments (million tonnes - 100%)                321.6            321.6          - % 
---------------------------------------------  ---------------  ---------------  ----------- 
Salt production (million tonnes - Rio Tinto 
 share)(1)                                                 5.8              5.8        (2) % 
---------------------------------------------  ---------------  ---------------  ----------- 
 
Segmental revenue (US$ millions)                        30,906           39,582       (22) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Average realised price (US$ per dry metric 
 tonne, FOB basis)                                       106.1            143.8       (26) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Underlying EBITDA (US$ millions)                        18,612           27,592       (33) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Pilbara underlying FOB EBITDA margin(2)                    68%              76% 
---------------------------------------------  ---------------  ---------------  ----------- 
Underlying earnings (US$ millions)                      11,182           17,323       (35) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Net cash generated from operating activities 
 (US$ millions)                                         14,005           19,177       (27) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Capital expenditure (US$ millions)(3)                  (2,940)          (3,947)       (26) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Free cash flow (US$ millions)                           11,033           15,172       (27) % 
---------------------------------------------  ---------------  ---------------  ----------- 
Underlying return on capital employed(4)                   62%             100% 
---------------------------------------------  ---------------  ---------------  ----------- 
 

1. Dampier Salt is reported within Iron Ore, reflecting management responsibility. Iron Ore Company of Canada continues to be reported within Minerals. The Simandou iron ore project in Guinea is reported within Copper.

2. The Pilbara underlying free on board (FOB) EBITDA margin is defined as Pilbara underlying EBITDA divided by Pilbara segmental revenue, excluding freight revenue.

3. Capital expenditure is the net cash outflow on purchases less sales of property, plant and equipment; capitalised evaluation costs; and purchases less sales of other intangible assets.

4. Underlying return on capital employed (ROCE) is defined as underlying earnings excluding net interest divided by average capital employed.

Financial performance

We achieved a number of operational records across the mine and rail system in the second half of 2022, due to operational improvements and the ramp-up of Gudai-Darri. In the year, we safely commissioned our Pilbara projects, despite challenging conditions with COVID-19, labour and supply chain disruptions. The focus now moves to the next tranche of mines starting with Western Range.

Underlying EBITDA of $18.6 billion was 33% lower than 2021, due to lower prices ($8.8 billion), following the 25% drop in the monthly average Platts index for 62% iron fines adjusted to an FOB basis. Higher sales volumes were achieved from our portside operations in China, which improved underlying EBITDA by $0.6 billion. We also increased resourcing to support the ramp-up at Gudai-Darri and targeted investment in pit health and asset maintenance across the Pilbara.

This additional investment, together with rising input prices, including diesel price escalation and labour, resulted in 2022 Pilbara unit cash costs of $21.3 per tonne (excluding COVID-19 costs of $0.4 per tonne). This compared with $18.6 per tonne in 2021 (excluding COVID-19 costs of $0.5 per tonne).

Our Pilbara operations delivered an underlying FOB EBITDA margin of 68%, compared with 76% in 2021, largely due to the change in the iron ore price.

We price the majority of our iron ore sales (77%) by reference to the average index price, for the month of shipment. In 2022, we priced approximately 10% of sales with reference to the prior quarter's average index lagged by one month with the remainder sold either on current quarter average, current month average or on the spot market. We made approximately 72% of sales including freight and 28% on an FOB basis.

We achieved an average iron ore price of $97.6 per wet metric tonne on an FOB basis (2021: $132.3 per wet metric tonne) across our product suite. This equates to $106.1 per dry metric tonne, assuming 8% moisture (2021: $143.8 per dry metric tonne), which compares with the monthly average Platts index for 62% iron fines converted to an FOB basis of $109.8 per dry metric tonne (2021: $146.9 per dry metric tonne). The 3% lower realised price compared to the Platts index was due to lower average grades, partially offset by higher premiums for lump products.

Segmental revenue for our Pilbara operations included freight revenue of $2.2 billion (2021: $2.7 billion).

Net cash generated from operating activities of $14.0 billion was $5.2 billion lower than 2021, with lower pricing partly offset by a monetisation of working capital. Free cash flow of $11.0 billion was $4.1 billion lower than 2021 due to the factors above, partially offset by a $1.0 billion reduction in capital expenditure to $2.9 billion following completion of brownfield mine replacement tie-in projects.

Review of operations

Pilbara operations produced 324.1 million tonnes (Rio Tinto share 272.9 million tonnes), 1% higher than 2021. Shipments of 321.6 million tonnes (Rio Tinto share 270.8 million tonnes), in line with 2021, included 35.5 million tonnes of lower grade SP10 products, 11% of shipments, on a 100% basis (2021: 11% of shipments).

Performance improvements continued across the system and we achieved a number of operational records in the second half across the mine and rail system. System inventories at the end of December were healthy, including strong blasted stocks, mine stocks and port stocks.

Our iron ore portside sales in China were 24.3 million tonnes in 2022 (14.0 million tonnes in 2021). At the end of the December, inventory levels were 7.8 million tonnes, including 5.5 million tonnes of Pilbara product. In 2022, approximately 80% of our portside sales were either screened or blended in Chinese ports.

Aluminium

 
Year ended 31 December                                             2022            2021       Change 
-------------------------------------------------------  --------------  --------------  ----------- 
Bauxite production ('000 tonnes - Rio Tinto 
 share)                                                          54,618          54,326          1 % 
-------------------------------------------------------  --------------  --------------  ----------- 
Alumina production ('000 tonnes - Rio Tinto 
 share)                                                           7,544           7,894        (4) % 
-------------------------------------------------------  --------------  --------------  ----------- 
Aluminium production ('000 tonnes - Rio Tinto 
 share)                                                           3,009           3,151        (4) % 
-------------------------------------------------------  --------------  --------------  ----------- 
 
Segmental revenue (US$ millions)                                 14,109          12,695         11 % 
-------------------------------------------------------  --------------  --------------  ----------- 
Average realised aluminium price (US$ per tonne)                  3,330           2,899         15 % 
Underlying EBITDA (US$ millions)                                  3,672           4,382       (16) % 
-------------------------------------------------------  --------------  --------------  ----------- 
Underlying EBITDA margin (integrated operations)                    29%             38% 
-------------------------------------------------------  --------------  --------------  ----------- 
Underlying earnings (US$ millions)                                1,472           2,468       (40) % 
-------------------------------------------------------  --------------  --------------  ----------- 
Net cash generated from operating activities 
 (US$ millions)                                                   3,055           3,606       (15) % 
-------------------------------------------------------  --------------  --------------  ----------- 
Capital expenditure - excluding EAUs (US$ millions)(1)          (1,377)         (1,300)          6 % 
-------------------------------------------------------  --------------  --------------  ----------- 
Free cash flow (US$ millions)                                     1,652           2,272       (27) % 
-------------------------------------------------------  --------------  --------------  ----------- 
Underlying return on capital employed(2)                            10%             16% 
-------------------------------------------------------  --------------  --------------  ----------- 
 

1. Capital expenditure is the net cash outflow on purchases less sales of property, plant and equipment; capitalised evaluation costs; and purchases less sales of other intangible assets. It excludes equity accounted units (EAUs).

2. Underlying return on capital employed (ROCE) is defined as underlying earnings excluding net interest divided by average capital employed.

Financial performance

Strong pricing in the first half fell away sharply in the second, which, together with rising energy and raw materials costs, led to a significant margin squeeze on our Aluminium business and a 16% decrease in underlying EBITDA for the year as a whole. Underlying EBITDA margin fell nine percentage points, but remained robust for the year at 29%.

Underlying EBITDA of $3.7 billion benefited from higher product premiums for primary metal in addition to the stronger pricing environment for primary metal and alumina in the first half. However, this was offset by higher coal prices and costs for key materials such as caustic soda, coke, pitch and anodes, leading to an increase in cash costs for alumina and primary metal.

We achieved an average realised aluminium price of $3,330 per tonne, 15% higher than 2021 ($2,899 per tonne).

Average realised aluminium prices comprise the LME price, a market premium and a value-added product (VAP) premium. The cash LME price averaged $2,703 per tonne, 9% higher than 2021, while in our key US market, the Midwest premium duty paid, which is 57% of our volumes (2021: 55%), increased by 12% to $655 per tonne (2021: $584 per tonne). Our VAP sales were stable at 50% of the primary metal we sold (2021: 50%) and generated product premiums averaging $431 per tonne of VAP sold (2021: $230 per tonne).

Our conversion of underlying EBITDA to cash remained relatively strong, with net cash generated from operating activities of $3.1 billion and free cash flow of $1.7 billion.

Review of operations

Bauxite production of 54.6 million tonnes was 1% higher than 2021, despite equipment reliability issues at Weipa and Gove in Australia.

We shipped 38.0 million tonnes of bauxite to third parties in 2022, 1% higher than 2021. In 2022, segmental revenue for bauxite increased 9% to $2.4 billion ; this includes freight revenue of $635 million (2021: $462 million).

Alumina production of 7.5 million tonnes was 4% lower than 2021. The refineries in the Pacific (Yarwun and Queensland Alumina Limited) were impacted by a range of challenges in 2022, including unplanned outages and equipment reliability issues. COVID-19 absenteeism impacted production in early 2022 but eased in the second half. Production at the Vaudreuil refinery in Quebec remained stable.

As the result of Queensland Alumina Limited's (QAL) activation of a step-in process following sanction measures by the Australian Government, we have taken on 100% of capacity for as long as the step-in continues. We are using Rusal's 20% share of capacity under the tolling arrangement with QAL. This additional output is excluded from our production results as QAL remains 80% owned by Rio Tinto and 20% owned by Rusal.

Aluminium production of 3.0 million tonnes was 4% lower than 2021, due to reduced output at our Kitimat smelter in British Columbia, Canada and Boyne smelter in Queensland, Australia. The rate of pot restarts at Kitimat picked up in the fourth quarter and Boyne smelter cell recovery efforts continued on plan. Recovery at both smelters is progressing, with full ramp-up expected to be completed during the course of 2023. All of our other aluminium smelters continued to demonstrate stable performance.

Copper

 
Year ended 31 December                                           2022            2021        Change 
----------------------------------------------------  ---------------  --------------  ------------ 
Mined copper production ('000 tonnes - Rio 
 Tinto share)                                                   521.1           493.5           6 % 
----------------------------------------------------  ---------------  --------------  ------------ 
Refined copper production ('000 tonnes - Rio 
 Tinto share)                                                   209.2           201.9           4 % 
----------------------------------------------------  ---------------  --------------  ------------ 
 
Segmental revenue (US$ millions)                                6,699           7,827        (14) % 
----------------------------------------------------  ---------------  --------------  ------------ 
Average realised copper price (US cents per 
 pound)(1)                                                        403             424         (5) % 
----------------------------------------------------  ---------------  --------------  ------------ 
Underlying EBITDA (US$ millions)                                2,376           3,969        (40) % 
----------------------------------------------------  ---------------  --------------  ------------ 
Underlying EBITDA margin (product group operations)               49%             59% 
----------------------------------------------------  ---------------  --------------  ------------ 
Underlying earnings (US$ millions)                                521           1,579        (67) % 
----------------------------------------------------  ---------------  --------------  ------------ 
Net cash generated from operating activities 
 (US$ millions)(2)                                              1,374           2,634        (48) % 
----------------------------------------------------  ---------------  --------------  ------------ 
Capital expenditure - excluding EAUs(3) (US$ 
 millions)                                                    (1,622)         (1,328)          22 % 
----------------------------------------------------  ---------------  --------------  ------------ 
                                                                                              (120) 
Free cash flow (US$ millions)                                   (265)           1,295             % 
----------------------------------------------------  ---------------  --------------  ------------ 
Underlying return on capital employed (product 
 group operations)(4)                                              6%             14% 
----------------------------------------------------  ---------------  --------------  ------------ 
 

1. Average realised price for all units sold. Realised price does not include the impact of the provisional pricing adjustments, which negatively impacted revenues by $175 million (2021: $246 million benefit).

2. Net cash generated from operating activities excludes the operating cash flows of equity accounted units (EAUs) but includes dividends from EAUs (Escondida).

3. Capital expenditure is the net cash outflow on purchases less sales of property, plant and equipment, capitalised evaluation costs and purchases less sales of other intangible assets. It excludes EAUs.

4. Underlying return on capital employed (ROCE) is defined as underlying earnings (product group operations) excluding net interest divided by average capital employed.

Financial performance

Underlying EBITDA was down 40% to $2.4 billion, with $0.7 billion of the reduction a result of lower copper prices, particularly in the second half of the year. An anticipated decrease in by-product sales volumes (particularly lower gold in concentrate at Oyu Tolgoi), rising cash costs, higher energy prices and an increase in exploration and evaluation expenditure also impacted EBITDA in 2022. Underlying EBITDA margin remained strong at 49%.

Our copper unit costs, at 163 cents per pound, increased by 81 cents, largely driven by the decline in by-product credits, together with rising input and higher labour costs, following the implementation of new labour laws in Mongolia and a new five-year collective bargaining agreement at Kennecott.

We generated $1.4 billion in net cash from operating activities, a 48% decrease on 2021, from the same drivers as underlying EBITDA, together with a smaller increase in working capital compared to 2021.

Negative free cash flow of $0.3 billion reflected the significant investment of $2.0 billion in our projects, an increase of 26% on 2021. This mainly related to the ongoing development of the Oyu Tolgoi underground project, underground growth projects at Kennecott and the Simandou iron ore project in Guinea.

Review of operations

Mined copper production, at 521 thousand tonnes, was 6% higher than 2021 due to higher grades at Kennecott and Escondida, partly offset by lower grades and recoveries at Oyu Tolgoi as a result of planned mine sequencing.

The 4% increase in refined copper production to 209 thousand tonnes mainly reflected a furnace failure in 2021 at Kennecott which resulted in the smelter being offline for the majority of the fourth quarter of 2021. Unplanned maintenance was required in the fourth quarter of 2022 in our anode furnaces, leading to extended downtime and continued poor anode production.

Oyu Tolgoi underground project

A comprehensive agreement was reached with the Government of Mongolia on 25 January 2022, resetting the relationship between the partners, increasing the value the project delivers for Mongolia, and allowing underground operations to commence.

In 2022, Rio Tinto and the Government of Mongolia remained focused on supporting Oyu Tolgoi to reach the sustainable production milestone, and continuing progress on the remaining measures contained in Mongolian Parliamentary Resolution 103.

At the end of 2022, a total of 19 drawbells had been fired. Drawbell progression accelerated as a result of improvement initiatives implemented by the Oyu Tolgoi teams, bringing projected first sustainable production from Panel 0 forward to the first quarter of 2023 (previously first half of 2023).

At the end of December, shafts 3 and 4 sinking had reached 378 metres and 507 metres below ground level respectively. Operational safety sinking pauses have caused some delays against the 2022 reforecast(1) to shaft sinking. Final depths required for shafts 3 and 4 are 1,148 and 1,149 metres below ground level respectively. Construction of conveyor-to-surface works continued with civil scope of works completed and other contractors mobilised to site.

Study work for Panels 1 and 2, which are required to support the ramp-up to 95,000 tonnes of ore per day, remains on track to be completed in the first half of 2023. It will incorporate any ventilation impacts due to the shaft 3 and 4 delays as a result of COVID-19 restrictions and reprioritisation of the mobilised workforce over the course of 2022.

On 16 December, we completed the acquisition of Turquoise Hill Resources Ltd (TRQ) for consideration of approximately $3.1 billion(2) , simplifying ownership of the Oyu Tolgoi mine, significantly strengthening our copper portfolio, and demonstrating our long-term commitment to the project and Mongolia. We now hold a 66% direct interest with the remaining 34% owned by the Government of Mongolia through Erdenes Oyu Tolgoi. This is allowing us to focus fully on strengthening our relationship with the Government of Mongolia and moving the project forward with a simpler and more efficient ownership and governance structure.

1. A cost and schedule reforecast was performed in June 2022 and estimates that $7.06 billion is required to complete the Hugo North 1 project (an increase of $0.3 billion beyond the 2020 Definitive Estimate). The 2022 Reforecast excludes impacts of COVID-19 restrictions arising after June 2022. The 2022 reforecast remains subject to Oyu Tolgoi Board approval.

2. Total consideration of $3,139 million for the minority interest in TRQ excludes transaction costs of $74 million. In 2022, we paid $2,928 million to shareholders and $33 million of transaction costs. In 2023, we expect to pay the remaining $41 million of transaction costs and approximately $211 million to dissenting shareholders, depending on the outcome and timing of dissent proceedings .

Minerals

 
Year ended 31 December                                           2022             2021    Change 
----------------------------------------------------  ---------------  ---------------  -------- 
Iron ore pellets and concentrates production(1) 
 (million tonnes - Rio Tinto share)                              10.3              9.7       6 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Titanium dioxide slag production ('000 tonnes 
 - Rio Tinto share)                                             1,200            1,014      18 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Borates production ('000 tonnes - Rio Tinto 
 share)                                                           532              488       9 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Diamonds production ('000 carats - Rio Tinto 
 share)(2)                                                      4,651            3,847      21 % 
----------------------------------------------------  ---------------  ---------------  -------- 
 
Segmental revenue (US$ millions)                                6,754            6,481       4 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Underlying EBITDA (US$ millions)                                2,419            2,603     (7) % 
----------------------------------------------------  ---------------  ---------------  -------- 
Underlying EBITDA margin (product group operations)               40%              43% 
----------------------------------------------------  ---------------  ---------------  -------- 
Underlying earnings (US$ millions)                                849              888     (4) % 
----------------------------------------------------  ---------------  ---------------  -------- 
Net cash generated from operating activities 
 (US$ millions)                                                 1,522            1,433       6 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Capital expenditure (US$ millions)(3)                           (679)            (644)       5 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Free cash flow (US$ millions)                                     814              762       7 % 
----------------------------------------------------  ---------------  ---------------  -------- 
Underlying return on capital employed (product 
 group operations)(4)                                             22%              21% 
----------------------------------------------------  ---------------  ---------------  -------- 
 
   1.   Iron Ore Company of Canada (IOC) continues to be reported within Minerals. 

2. On 17 November 2021, Rio Tinto's interest in Diavik increased from 60% to 100%. Production and financials reflect this from 1 November 2021.

3. Capital expenditure is the net cash outflow on purchases less sales of property, plant and equipment; capitalised evaluation costs; and purchases less sales of other intangible assets.

4. Underlying return on capital employed (ROCE) is defined as underlying earnings (product group operations) excluding net interest divided by average capital employed.

Financial performance

In 2022, we benefited from strong market conditions for titanium dioxide pigment and borates, partially offset by a weaker market for iron ore pellets and concentrate, albeit off record levels. We also saw higher diamond prices compared with 2021, following a pandemic-related build up of demand and low inventory levels.

Underlying EBITDA of $2.4 billion was 7% lower than 2021, primarily due to inflationary pressures, energy price increases and Rincon evaluation costs. This was partially offset by prices and higher EBITDA in relation to the increased ownership in Diavik.

Net cash generated from operating activities of $1.5 billion was 6% higher than 2021, while free cash flow of $0.8 billion was 7% higher, reflecting a higher EBITDA cash conversion supported by lower dividends paid to holders of non-controlling interests at Iron Ore Company of Canada.

Review of operations

Production of iron ore pellets and concentrate at IOC was 6% higher than 2021 due to the successful deployment of the Safe Production System (SPS) at the concentrator, which was completed in the year. Record performance metrics were achieved in the year, including monthly records for concentrate production and total material moved in the second quarter. Planning for SPS deployment at the pellet plant commenced in December.

Titanium dioxide production of 1.2 million tonnes was 18% higher than 2021 due to community disruptions at Richards Bay Minerals (RBM) in South Africa in 2021, and continued improved performance of operations at Rio Tinto Iron and Titanium Quebec Operations, Canada. Nationwide loadshedding of electrical power caused production constraints at RBM in late 2022.

Borates production was 9% higher than 2021, with strong production rates, higher grades and improved equipment reliability.

Our share of carats recovered was 21% higher than 2021, from our increased share of production since taking 100% ownership of Diavik in November 2021, partly offset by lower carats recovered due to lower grades.

Price and exchange rate sensitivities

The following sensitivities give the estimated effect on underlying EBITDA, assuming that each price or exchange rate moved in isolation. The relationship between currencies and commodity prices is a complex one; movements in exchange rates can affect movements in commodity prices and vice versa. The exchange rate sensitivities quoted here include the effect on operating costs of movements in exchange rates, but do not include the effect of the revaluation of foreign currency working capital. Please use them with care.

 
                                                                                                       US$ million 
                                                                                                         impact on 
                                                                                                    full-year 2022 
                                                                                                        underlying 
                                                            Average published                               EBITDA 
                                                               price/exchange                      of a 10% change 
                                                                     rate for                   in prices/exchange 
                                                                         2022                                rates 
------------------------------------------  ---------------------------------  ----------------------------------- 
Aluminium - US$ per tonne                                               2,703                                1,076 
------------------------------------------  ---------------------------------  ----------------------------------- 
Copper - US cents per pound                                               398                                  505 
------------------------------------------  ---------------------------------  ----------------------------------- 
Gold - US$ per troy ounce                                               1,800                                   68 
------------------------------------------  ---------------------------------  ----------------------------------- 
Iron ore realised price (FOB basis) - US$ 
 per dry metric tonne                                                   106.1                                2,608 
------------------------------------------  ---------------------------------  ----------------------------------- 
Australian dollar against the US dollar                                  0.69                                  629 
------------------------------------------  ---------------------------------  ----------------------------------- 
Canadian dollar against the US dollar                                    0.77                                  339 
------------------------------------------  ---------------------------------  ----------------------------------- 
Oil (Brent) - US per barrel                                               100                                  220 
------------------------------------------  ---------------------------------  ----------------------------------- 
 

The impact of a $100 per tonne change in each of the input costs below is expected to have the following impact on our Canadian(1) aluminium smelting unit cash cost(2) of $1,678 per tonne in 2022 ($1,373 per tonne in 2021):

 
                                               US$/t 
------------------------------  -------------------- 
Alumina (FOB)                                    191 
------------------------------  -------------------- 
Green petroleum coke (FOB)                        23 
------------------------------  -------------------- 
Calcined petroleum coke (FOB)                     36 
------------------------------  -------------------- 
Coal tar pitch (FOB)                               8 
------------------------------  -------------------- 
 

1. Canadian smelters include all fully-owned smelters in Canada (Alma, AP60, Arvida, Grande-Baie, Kitimat and Laterrière), as well as our share of the Becancour and Alouette smelters.

2. The smelting unit cash cost refers to all costs which have been incurred before casting, excluding depreciation but including corporate allocations and with alumina at market price, to produce one metric tonne of primary aluminium.

2.

Condensed consolidated financial statements for the

year ended 31 December 2022

Contents:

 
Condensed consolidated financial statements   Page number 
Group income statement                                 27 
Group statement of comprehensive income                28 
Group cash flow statement                              29 
Group balance sheet                                    31 
Group statement of changes in equity                   32 
 
 
Selected explanatory notes to the condensed consolidated financial 
 statements 
 1   Status of financial information                                35 
     Basis of preparation and changes in accounting 
 2    policies                                                      35 
 3   Segmental information                                          45 
 4   Segmental information - additional information                 49 
 5   Impairment charges net of reversal                             50 
 6   Taxation                                                       52 
 7   Acquisitions and disposals                                     53 
 8   Cash and cash equivalents                                      55 
 9   Provisions including post-retirement benefits                  55 
10   Financial instruments                                          57 
11   Commitments and Contingencies                                  60 
12   Purchase of Turquoise Hill Resources Ltd                       63 
13   Events after the balance sheet date                            64 
 
 
Additional voluntary disclosure for the shareholders 
Rio Tinto financial information by business unit       65 
Alternative performance measures                       69 
Metal prices and exchange rates                        79 
 

Group income statement

 
 
                                                                       2022                   2021 
Year ended 31 December                            Note                 US$m                   US$m 
Consolidated operations 
Consolidated sales revenue                         3,4               55,554                 63,495 
Net operating costs (excluding items disclosed 
 separately)                                                       (34,770)               (32,690) 
Impairment reversals/(charges net of reversals)      5                  150                  (269) 
Loss on disposal of interest in subsidiary           5                (105)                      - 
Exploration and evaluation expenditure (net 
 of profit relating to interests in undeveloped 
 projects)                                                            (896)                  (719) 
------------------------------------------------  ----  -------------------  --------------------- 
Operating profit                                                     19,933                 29,817 
Share of profit after tax of equity accounted 
 units                                                                  777                  1,042 
Impairment of investments in equity accounted 
 units                                               5                (202)                      - 
------------------------------------------------  ----  -------------------  --------------------- 
Profit before finance items and taxation                             20,508                 30,859 
Finance items 
Net exchange gains on external and intragroup 
 net (debt)/cash balances                                               253                    802 
Net losses on derivatives not qualifying for 
 hedge accounting                                                     (424)                  (231) 
Finance income                                                          179                     64 
Finance costs                                                         (335)                  (243) 
Amortisation of discount on provisions               9              (1,519)                  (418) 
------------------------------------------------  ----  -------------------  --------------------- 
                                                                    (1,846)                   (26) 
------------------------------------------------  ----  -------------------  --------------------- 
Profit before taxation                                               18,662                 30,833 
Taxation                                             6              (5,586)                (8,258) 
Profit after tax for the year                                        13,076                 22,575 
- attributable to owners of Rio Tinto (net 
 earnings)                                                           12,420                 21,094 
- attributable to non-controlling interests                             656                  1,481 
------------------------------------------------  ----  -------------------  --------------------- 
 
Basic earnings per share                                             766.8c               1,303.4c 
Diluted earnings per share                                           762.1c               1,295.0c 
------------------------------------------------  ----  -------------------  --------------------- 
 

The notes on pages 35 to 64 are an integral part of these condensed consolidated financial statements.

Group statement of comprehensive income

 
 
                                                                                   2022                    2021 
Year ended 31 December                                     Note                    US$m                    US$m 
--------------------------------------------------------  -----  ----------------------  ---------------------- 
Profit after tax for the year                                                    13,076                  22,575 
 
Other comprehensive (loss)/income 
Items that will not be reclassified to the 
 income statement: 
Re-measurement gains on pension and post-retirement 
 healthcare plans                                                                   578                   1,026 
Changes in the fair value of equity investments 
 held at fair value through other comprehensive 
 income (FVOCI)                                                                       -                       5 
Tax relating to these components of other comprehensive 
 income                                                                           (123)                   (305) 
Share of other comprehensive income of equity 
 accounted units, net of tax                                                          5                      12 
                                                                                    460                     738 
 
Items that have been/may be subsequently reclassified 
 to the income statement: 
Currency translation adjustment(a)                                              (2,371)                 (1,843) 
Currency translation on subsidiary disposed                                         105                       - 
 of, transferred to the income statement 
Fair value movements: 
- Cash flow hedge losses                                                          (167)                   (211) 
- Cash flow hedge losses transferred to the 
 income statement                                                                   106                      14 
Net change in costs of hedging reserve                                                4                    (18) 
Tax relating to these components of other comprehensive 
 loss                                                                                21                      62 
Share of other comprehensive losses of equity 
 accounted units, net of tax                                                       (27)                    (12) 
---------------------------------------------------------------  ----------------------  ---------------------- 
                                                                                (2,329)                 (2,008) 
 --------------------------------------------------------------  ----------------------  ---------------------- 
Total other comprehensive (loss)/income for 
 the year, net of tax                                                           (1,869)                 (1,270) 
---------------------------------------------------------------  ----------------------  ---------------------- 
Total comprehensive income for the year                                          11,207                  21,305 
---------------------------------------------------------------  ----------------------  ---------------------- 
- attributable to owners of Rio Tinto                                            10,705                  19,896 
- attributable to non-controlling interests                                         502                   1,409 
---------------------------------------------------------------  ----------------------  ---------------------- 
 

(a) Excludes a currency translation charge of US$240 million (2021: charge of US$211 million) arising on Rio Tinto Limited's share capital for the year ended 31 December 2022, which is recognised in the Group statement of changes in equity on page 32 .

(a)

Group cash flow statement

 
 
                                                                               2022                  2021 
Year ended 31 December                                  Note                   US$m                  US$m 
------------------------------------------------------  ----  ---------------------  -------------------- 
Cash flows from consolidated operations(a)                                   23,158                33,936 
Dividends from equity accounted units                                           879                 1,431 
------------------------------------------------------  ----  ---------------------  -------------------- 
Cash flows from operations                                                   24,037                35,367 
 
Net interest paid                                                             (573)                 (438) 
Dividends paid to holders of non-controlling 
 interests in subsidiaries                                                    (421)               (1,090) 
Tax paid                                                                    (6,909)               (8,494) 
------------------------------------------------------  ----  ---------------------  -------------------- 
Net cash generated from operating activities                                 16,134                25,345 
 
Cash flows from investing activities 
Purchases of property, plant and equipment 
 and intangible assets                                                      (6,750)               (7,384) 
Sales of property, plant and equipment and 
 intangible assets                                                                -                    61 
Acquisitions of subsidiaries, joint ventures 
 and associates                                            7                  (850)                     - 
Disposals of subsidiaries, joint ventures, 
 unincorporated joint operations and associates            7                     80                     4 
Purchases of financial assets                                                  (55)                  (45) 
Sales of financial assets(b)(c)                                                 892                   114 
Net (funding of)/receipts from equity accounted 
 units                                                                         (75)                     6 
Other investing cash flows(d)                                                    51                    85 
------------------------------------------------------  ----  ---------------------  -------------------- 
Net cash used in investing activities                                       (6,707)               (7,159) 
 
Cash flows before financing activities                                        9,427                18,186 
 
Cash flows from financing activities 
Equity dividends paid to owners of Rio Tinto                               (11,727)              (15,357) 
Proceeds from additional borrowings(e)                                          321                 1,488 
Repayment of borrowings and associated derivatives(e)                         (790)               (1,707) 
Lease principal payments                                                      (374)                 (358) 
Proceeds from issue of equity to non-controlling 
 interests                                                                       86                    66 
Purchase of non-controlling interest(f)                   12                (2,961)                     - 
Other financing cash flows                                                     (28)                     6 
------------------------------------------------------  ----  ---------------------  -------------------- 
Net cash used in financing activities                                      (15,473)              (15,862) 
Effects of exchange rates on cash and cash 
 equivalents                                                                     15                   100 
------------------------------------------------------  ----  ---------------------  -------------------- 
Net (decrease)/increase in cash and cash equivalents                        (6,031)                 2,424 
------------------------------------------------------  ----  ---------------------  -------------------- 
Opening cash and cash equivalents less overdrafts                            12,805                10,381 
------------------------------------------------------  ----  ---------------------  -------------------- 
Closing cash and cash equivalents less overdrafts          8                  6,774                12,805 
------------------------------------------------------  ----  ---------------------  -------------------- 
 
(a) Cash flows from consolidated operations 
------------------------------------------------------  ----  ---------------------  -------------------- 
Profit after tax for the year                                                13,076                22,575 
Adjustments for: 
- Taxation                                                 6                  5,586                 8,258 
- Finance items                                                               1,846                    26 
- Share of profit after tax of equity accounted 
 units                                                                        (777)               (1,042) 
- Loss on disposal of interest in subsidiary               5                    105                     - 
- Impairment charges of investments in equity 
 accounted units after tax                                 5                    202                     - 
- Impairment reversal/(charges net of reversals)           5                  (150)                   269 
- Depreciation and amortisation                                               5,010                 4,697 
- Provisions (including exchange differences 
 on provisions)                                            9                  1,006                 1,903 
- Pension settlement                                                              -                 (291) 
Utilisation of other provisions                            9                  (176)                 (128) 
Utilisation of provisions for close-down and 
 restoration                                               9                  (609)                 (541) 
Utilisation of provisions for post-retirement 
 benefits and other employment costs                       9                  (254)                 (231) 
Change in inventories                                                       (1,185)               (1,397) 
Change in receivables and other assets(g)                                        20                 (367) 
Change in trade and other payables                                              700                   685 
Other items(h)                                                              (1,242)                 (480) 
------------------------------------------------------  ----  ---------------------  -------------------- 
                                                                             23,158                33,936 
------------------------------------------------------  ----  ---------------------  -------------------- 
 

Group cash flow statement (continued)

(b) In 2022, we received net proceeds of US$352 million (2021: US$107 million) from our sales and purchases of investments within a separately managed portfolio of fixed income instruments. Purchases and sales of these securities are reported on a net cash flow basis within "Sales of financial assets" or "Purchases of financial assets" depending on the overall net position at each reporting date.

(c) Sale of financial assets includes US$525 million of cash received from the sale of our gross production royalty from the Cortez Complex in Nevada, USA, (the "Cortez royalty") comprising a gold mine joint venture operated by Barrick Gold Corporation ("Barrick") and Newmont Corporation and the Fourmile project owned and operated by Barrick.

(d) In 2022 other investing cash flows includes inflows relating to payments from a trust fund controlled by the Government of Australia to Energy Resources Australia ('ERA') for closure activity that has been completed. At 31 December 2022 the total amount held in the trust fund was US$329 million (31 December 2021: US$388 million). In 2021 other investing cash flows included a net settlement upon completion of a transaction increasing the Group's 60% share in the Diavik Diamond Mine to sole ownership.

(e) In 2021, we issued US$1.25 billion 30-years fixed rate SEC-registered debt securities with a coupon of 2.75%. The funds were received net of issuance fees and discount. We also completed a US$1.2 billion (nominal value) bond buy-back programme. There were no issuances in 2022.

(f) On 16 December 2022 we acquired the remaining 49% share of Turquoise Hill Resources for expected consideration of US$3.2 billion inclusive of transaction fees. At 31 December 2022 US$2,961 million had been paid.

(g) In 2021, the Mongolian Tax Authority required payment by Oyu Tolgoi of US$356 million in relation to disputed tax matters. Oyu Tolgoi continues to dispute the matters and has classified amounts subject to international arbitration as prepayments pending resolution.

(h) Other items includes the deduction of the US$432 million relating to the gain recognised on sale of the Cortez royalty shown in "Sale of financial assets" and the recognition of realised losses of US$459 million on currency forwards not designated as hedges (2021: realised losses US$131 million). In 2021 other items also included US$336 million relating to a gain on recognition of a new wharf at Kitimat, Canada with no associated cash flow.

(h)

Group balance sheet

 
                                                                     2022                      2021 
                                              Note                   US$m                      US$m 
--------------------------------------------  ----  ---------------------  ------------------------ 
Non-current assets 
Goodwill                                                              826                       879 
Intangible assets                                5                  3,645                     2,832 
Property, plant and equipment                                      64,734                    64,927 
Investments in equity accounted units                               3,298                     3,504 
Inventories                                                           203                       196 
Deferred tax assets                                                 2,766                     3,375 
Receivables and other assets                                        1,893                     2,194 
Tax recoverable                                                         -                        29 
Other financial assets                                                406                       528 
--------------------------------------------  ----  ---------------------  ------------------------ 
                                                                   77,771                    78,464 
Current assets 
Inventories                                                         6,213                     5,436 
Receivables and other assets                                        3,478                     3,574 
Tax recoverable                                                       347                        72 
Other financial assets                                              2,160                     2,543 
Cash and cash equivalents                        8                  6,775                    12,807 
--------------------------------------------  ----  ---------------------  ------------------------ 
                                                                   18,973                    24,432 
Total assets                                                       96,744                   102,896 
--------------------------------------------  ----  ---------------------  ------------------------ 
 
Current liabilities 
Borrowings                                                          (923)                     (812) 
Leases                                                              (292)                     (324) 
Other financial liabilities                                          (69)                     (245) 
Trade and other payables                                          (8,047)                   (7,733) 
Tax payable                                                         (223)                   (1,407) 
Close-down and restoration provisions                             (1,142)                   (1,023) 
Provisions for post-retirement benefits and 
 other employment costs                                             (353)                     (383) 
Other provisions                                                    (554)                     (700) 
--------------------------------------------  ----  ---------------------  ------------------------ 
                                                                 (11,603)                  (12,627) 
Non-current liabilities 
Borrowings                                                       (10,148)                  (11,356) 
Leases                                                              (908)                   (1,039) 
Other financial liabilities                                         (904)                     (393) 
Trade and other payables                                            (604)                     (798) 
Tax payable                                                          (36)                     (660) 
Deferred tax liabilities                                          (3,601)                   (3,503) 
Close-down and restoration provisions            9               (14,617)                  (13,519) 
Provisions for post-retirement benefits and 
 other employment costs                          9                (1,305)                   (2,109) 
Other provisions                                 9                  (744)                     (302) 
--------------------------------------------  ----  ---------------------  ------------------------ 
                                                                 (32,867)                  (33,679) 
Total liabilities                                                (44,470)                  (46,306) 
--------------------------------------------  ----  ---------------------  ------------------------ 
Net assets                                                         52,274                    56,590 
--------------------------------------------  ----  ---------------------  ------------------------ 
 
Capital and reserves 
Share capital(a) 
- Rio Tinto plc                                                       207                       207 
- Rio Tinto Limited                                                 3,330                     3,570 
Share premium account                                               4,322                     4,320 
Other reserves                                                      7,805                     9,998 
Retained earnings                                                  34,511                    33,337 
--------------------------------------------  ----  ---------------------  ------------------------ 
Equity attributable to owners of Rio Tinto                         50,175                    51,432 
Attributable to non-controlling interests       12                  2,099                     5,158 
--------------------------------------------  ----  ---------------------  ------------------------ 
Total equity                                                       52,274                    56,590 
--------------------------------------------  ----  ---------------------  ------------------------ 
 

Group balance sheet (continued)

(a) At 31 December 2022, Rio Tinto plc had 1,249.7 million ordinary shares in issue and held by the public, and Rio Tinto Limited had 371.2 million shares in issue and held by the public. There were no cross holdings of shares between Rio Tinto Limited and Rio Tinto plc in either periods presented. As required to be disclosed under the ASX Listing Rules, the net tangible assets per share amounted to US$28.20 (31 December 2021: US$29.47).

Group statement of changes in equity

 
                                           Attributable to owners of Rio 
                                                       Tinto 
                  ------------------------------------------------------------------------------- 
                                            Share 
                          Share           premium           Other        Retained                     Non-controlling           Total 
Year ended 31           capital           account        reserves        earnings           Total           interests          equity 
December 2022              US$m              US$m            US$m            US$m            US$m                US$m            US$m 
Opening balance           3,777             4,320           9,998          33,337          51,432               5,158          56,590 
Change in 
 accounting 
 policy 
 (refer to note 
 2)                           -                 -               -            (17)            (17)                   -            (17) 
----------------  -------------  ----------------  --------------  --------------  --------------  ------------------  -------------- 
Revised opening 
 balance                  3,777             4,320           9,998          33,320          51,415               5,158          56,573 
Total 
 comprehensive 
 income 
 for the year                 -                 -         (2,165)          12,870          10,705                 502          11,207 
Currency 
 translation 
 arising 
 on Rio Tinto 
 Limited's share 
 capital                  (240)                 -               -               -           (240)                   -           (240) 
Dividends(a)                  -                 -               -        (11,716)        (11,716)               (421)        (12,137) 
Own shares 
 purchased from 
 Rio Tinto 
 shareholders to 
 satisfy share 
 awards to 
 employees(b)                 -                 -            (84)            (16)           (100)                   -           (100) 
Change in equity 
 interest 
 held by Rio 
 Tinto (refer 
 to note 12)                  -                 -               -             701             701             (3,907)         (3,206) 
Treasury shares 
 reissued 
 and other 
 movements                    -                 2               -               -               2                   -               2 
Equity issued to 
 holders 
 of 
 non-controlling 
 interests 
 (note 12)                    -                 -               -           (711)           (711)                 797              86 
Employee share 
 awards charged 
 to the income 
 statement                    -                 -              56              63             119                   -             119 
Transfers and 
 other movements              -                 -               -               -               -                (30)            (30) 
Closing balance           3,537             4,322           7,805          34,511          50,175               2,099          52,274 
 
                                           Attributable to owners of Rio 
                                                       Tinto 
----------------  ------------------------------------------------------------------------------- 
                                            Share 
                          Share           premium           Other        Retained                     Non-controlling           Total 
Year ended 31           capital           account        reserves        earnings           Total           interests          equity 
December 2021              US$m              US$m            US$m            US$m            US$m                US$m            US$m 
----------------  -------------  ----------------  --------------  --------------  --------------  ------------------  -------------- 
Opening balance           3,988             4,314          11,960          26,792          47,054               4,849          51,903 
Total 
 comprehensive 
 income 
 for the year                 -                 -         (1,916)          21,812          19,896               1,409          21,305 
Currency 
 translation 
 arising 
 on Rio Tinto 
 Limited's share 
 capital                  (211)                 -               -               -           (211)                   -           (211) 
Dividends(a)                  -                 -               -        (15,385)        (15,385)             (1,090)        (16,475) 
Own shares 
 purchased from 
 Rio Tinto 
 shareholders to 
 satisfy share 
 awards to 
 employees(b)                 -                 -            (95)            (18)           (113)                   -           (113) 
Change in equity 
 interest 
 held by Rio 
 Tinto                        -                 -               -              76              76                (76)               - 
Treasury shares 
 reissued 
 and other 
 movements                    -                 6               -               -               6                   -               6 
Equity issued to 
 holders 
 of 
 non-controlling 
 interests                    -                 -               -               -               -                  66              66 
Employee share 
 awards charged 
 to the income 
 statement                    -                 -              49              60             109                   -             109 
Closing balance           3,777             4,320           9,998          33,337          51,432               5,158          56,590 
----------------  -------------  ----------------  --------------  --------------  --------------  ------------------  -------------- 
 

Group statement of changes in equity (continued)

(a) Dividends per share announced or paid during the period are summarised below:

 
 
                                                     2022    2021 
For year ended 31 December                           US$m    US$m 
Dividends per share: Ordinary - paid during the 
 year                                              684.0c  685.0c 
Dividends per share: Special - paid during the 
 year                                               62.0c  278.0c 
Ordinary dividends per share: announced with the 
 results for the year                              225.0c  417.0c 
Special dividends per share: announced with the 
 results for the year                                   -   62.0c 
-------------------------------------------------  ------  ------ 
 

(b) Net of contributions received from employees for share awards.

Selected explanatory notes to the condensed consolidated financial statements

   1.   Status of financial information 

The full year financial information contained in this announcement, which does not constitute statutory accounts as defined in Section 434 of the Companies Act 2006, has been derived from the statutory accounts for the year ended 31 December 2022. These statutory accounts have been audited, were approved by the Board on 22 February 2023, and will be filed with the Registrar of Companies in the United Kingdom and the Australian Securities and Investments Commission in due course. Statutory accounts for the year ended 31 December 2021 have been filed with the Registrar of Companies.

Unless stated otherwise, financial information for the years ended 31 December 2022 and 31 December 2021 has been extracted from the full financial statements for that year prepared under the historical cost convention, as modified by the revaluation of certain derivative contracts, the impact of fair value hedge accounting on the hedged items and the accounting for post-retirement assets and obligations.

The Auditors' reports on the full financial statements for the years ended 31 December 2022 and 31 December 2021 were both unqualified and, in relation to Rio Tinto plc, did not contain a statement under section 498 (2) (regarding adequacy of accounting records and returns), or under section 498 (3) (regarding provision of necessary information and explanations) of the United Kingdom Companies Act 2006, and in relation to Rio Tinto Limited, contained a statement that the financial report is in accordance with the Corporations Act 2001 as amended by the ASIC Order dated 16 July 2021.

   1.   Basis of preparation and changes in accounting policies 

The condensed consolidated financial statements included in this report have been prepared on a going concern basis in accordance with the Companies Act 2006 applicable to companies reporting under International Financial Reporting Standards and in accordance with applicable UK law, applicable Australian law as amended by the Australian Securities and Investments Commission Order dated 16 July 2021, Article 4 of the European Union IAS regulation and also with:

- International Financial Reporting Standards as issued by the International Accounting Standards Board (IASB) and interpretations issued from time to time by the IFRS Interpretations Committee (IFRS IC) which are mandatory at 31 December 2022.

The above accounting standards and interpretations are collectively referred to as "IFRS" in this report. While the financial information included in this report has been prepared in accordance with IFRS the report does not contain all the information required to comply with IFRS. The Group will publish full financial statements that comply with IFRS on 22 February 2023.

The Group has not early adopted any amendments, standards or interpretations that have been issued but are not yet mandatory.

The Group's financial statements have been prepared on the basis of accounting policies consistent with those applied in the financial statements for the year ended 31 December 2021, except for the accounting requirements set out below, effective as at 1 January 2022, which did not have a significant impact on the Group's financial statements.

2. Basis of preparation and changes in accounting policies (continued)

Proceeds before Intended Use (Amendments to IAS 16 "Property, Plant and Equipment")

We adopted Proceeds before Intended Use (Amendments to IAS 16 "Property, Plant and Equipment") at 1 January 2022. The amendment prohibits the deduction, from the cost of major project construction work in progress, of proceeds (net of additional processing costs) from selling items before the related item of property, plant and equipment is available for use. Under the amendment, proceeds from selling items before the related item of property, plant and equipment is available for use are recognised within "Consolidated sales revenue" in the income statement along with the costs of producing those items within "Net operating costs (excluding items disclosed separately)". We apportion development expenditure in the period to derive the cost associated with pre-production revenue, based on the tonnes produced in the period as a percentage of the total expected production (estimated total ore reserve). During 2021 we completed a review of the impact of these amendments and concluded that adjustments to retained earnings as at 1 January 2020, and restatement of the 2020 and 2021 Group Income Statement and Balance Sheet upon adoption of the amendments, were insignificant and as a result no restatements were made to comparative periods. During the year ended 31 December 2022 we recognised in the income statement pre-production revenue of US$511 million and related costs of US$30 million in relation to Gudai Darri and Oyu Tolgoi.

Onerous Contracts - Cost of Fulfilling a Contract (Amendments to IAS 37 "Provisions, Contingent Liabilities and Contingent Assets")

We adopted Onerous Contracts - Cost of Fulfilling a Contract (Amendments to IAS 37 "Provisions, Contingent Liabilities and Contingent Assets") at 1 January 2022. The amendments specify that the costs an entity includes in determining whether a contract is onerous are made up of all directly related costs, including both incremental amounts and an allocation of other directly related expenditure. Previously, we made provision for onerous contracts when the assets dedicated to the contract were fully impaired or the contract became stranded as a result of a business decision. From 2022, we record a provision if a contract is found to be loss-making on a stand-alone basis following allocation of all directly related costs as required by the amendments to IAS 37.

We have applied the amendments without revision to comparative amounts. We have increased other provisions and reduced our retained earnings as at 1 January 2022 by US$17 million .

New standards issued but not yet effective

We have not early adopted any new accounting standards or amendments that have been issued but are not yet effective.

Deferred Tax related to Assets and Liabilities arising from a Single Transaction (Amendments to IAS 12 Income Taxes, mandatory in 2023 and endorsed by the UK)

The Group will adopt, from January 2023 (the transition date), the narrow-scope amendments to IAS 12, which introduce an exclusion to the initial recognition exemption application for transactions that give rise to equal and offsetting taxable and deductible temporary differences.

2. Basis of preparation and changes in accounting policies (continued)

Our existing accounting policy states that "where the recognition of an asset and liability from a single transaction gives rise to equal and offsetting temporary differences, Rio Tinto applies the initial recognition exemption allowed by IAS 12, and consequently recognises neither a deferred tax asset nor a deferred tax liability in respect of these temporary differences". Under the amendments, deferred tax assets and liabilities are required to be recognised in respect of such temporary differences from the transition date, with restatement of comparatives for 2022 and 2021.

The most significant impact of implementing these amendments is expected to be from temporary differences related to the Group's provisions for close-down and restoration, and lease obligations and corresponding capitalised closure costs and right-of-use assets. Adjustments to deferred tax assets and liabilities related to these balances will be recognised as at 1 January 2021, being the beginning of the earliest comparative period presented in 2023 financial statements, with the cumulative effect recognised as an adjustment to retained earnings or other components of equity at that date. For other transactions the amendments apply only to those taking place on or after 1 January 2021.

The impact of restatement as at 31 December 2022 is that the Group will recognise additional gross deferred tax liabilities of US$922 million and gross deferred tax assets of US$1.4 billion in relation to close-down and restoration obligations and related capitalised closure costs. The Group will also recognise additional gross deferred tax liabilities of US$140 million and gross deferred tax assets of US$149 million in relation to lease liabilities and related right-of-use assets.

After the required offsetting within the same tax jurisdiction, these adjustments result in the Group recognising additional net deferred tax assets of US$30 million and a reduction in net deferred tax liabilities of US$437 million with the resulting cumulative impact increasing retained earnings (inclusive of income statement adjustments described below) by US$459 million. As at 1 January 2021 and 31 December 2021, the restatement of gross and net deferred tax balances does not differ materially from the impact as at 31 December 2022.

The impact of restatement on net earnings for the year ended 2022 is a net charge of US$28 million comprising a US$84 million credit (2021:US$22 million) related to depreciation of closure and right of use assets, and settlement of closure and lease liabilities, offset by a US$112 million charge (2021: nil ) related to the derecognition of deferred tax assets as a result of the recently enacted Corporate Alternative Minimum Tax regime in the USA (refer to Note 6).

There will be no impact on tax cash flows or amounts recognised on the balance sheet as tax recoverable or payable as a result of implementing these amendments.

IFRS 17 Insurance Contracts and amendments to IFRS 17 Insurance Contracts (mandatory in 2023 and endorsed by the UK)

The standard provides consistent principles for all aspects of accounting for insurance contracts. We are finalising our assessment and have not identified a material impact to date, particularly in areas of judgment related to reinsurance contracts with EAUs and in substance self-insurance arrangements.

2. Basis of preparation and changes in accounting policies (continued)

Other amendments

The assessment is ongoing in relation to other amendments, but no material impact has been identified to date. These are listed below:

- Amendments to IAS 1 Presentation of Financial Statements: disclosure of accounting policies (mandatory in 2023 and endorsed by the UK);

- Amendments to IAS 8 Accounting policies, changes in accounting estimates and errors: definition of accounting estimates (mandatory in 2023 and endorsed by the UK)

- Amendments to IAS 1 Presentation of Financial Statements: classification of liabilities (mandatory in 2024 and not yet endorsed by the UK).

Going concern

Management has prepared detailed cash flow forecasts for the next 12 months and has updated life-of-mine plan models with longer-term cash flow projections. These forecasts demonstrate that the Group has sufficient cash, other liquid resources and undrawn credit facilities to enable it to meet its obligations as they fall due. As such, the directors considered it appropriate to adopt the going concern basis of accounting in preparing the full-year financial information.

Impact of climate change on the Group

Strategy and approach to climate change

Over a year ago, we put the low-carbon transition at the heart of our new strategy, setting a clear pathway to deliver long-term value as well as ambitious targets to decarbonise our business. In 2022, our shareholders supported our Climate Action Plan in a non-binding advisory vote on the Group's ambitions, emissions targets and actions to achieve them.

Our Scope 1 and 2 emissions reduction targets of 15% by 2025, 50% by 2030 (both relative to our 2018 equity baseline) and the aim to achieve net zero emissions by 2050 are aligned with 1.5degC - the stretch goal of the Paris Agreement. We have set up six large abatement programmes focused on renewables, Pacific aluminium operations, ELYSIS(TM) technology, process heat, minerals processing and diesel alternatives. To deliver our climate targets, we expect to make capital investment of US$7.5 billion in decarbonisation projects over the period to 2030, including around US$1.5 billion in the next three years, mainly relating to the repowering of the Pilbara. Progress towards our Scope 1 and 2 emissions targets is reflected within executive remuneration.

In 2022, we delivered the first 34MW of renewable power at Gudai-Darri and announced our plan to invest US$600 million in 200MWh of solar power facilities and 200MWh of battery storage in the Pilbara by 2026 . We agreed to test at least four battery-powered locomotives, and pilot battery-powered trucks in the Pilbara in 2024. By 2030, we aim to phase out the purchase of diesel haulage trucks and locomotives across our operations. At the Queensland Alumina refinery we are working to develop an energy efficient digestion process at an estimated cost of US$240 million. In 2022, we continued to work with the Queensland Government and energy providers to design a renewable energy solution for Boyne Smelter. Similarly, in 2022, Tomago Aluminium Company released an expression of interest to work towards a green repowering solution for the Tomago smelter.

2. Basis of preparation and changes in accounting policies (continued)

In addition, we have signed a 130MW solar power purchase agreement for Richards Bay Minerals (RBM) in South Africa.We also intend to decarbonise our shipping fleet and aim to have net zero vessels in our portfolio by 2030. To achieve this, in 2022 we successfully completed a trial of fuel blend with biofuels and in 2023-2024 we plan to incorporate nine LNG dual-fuel chartered vessels into our fleet. Decarbonisation projects are expected to accelerate beyond 2025, which we expect to include further decarbonisation of the Pilbara electricity system (estimated at US$3 billion out of the US$7.5 billion total spend by 2030) and other abatement projects.

We are also stepping up our focus on Scope 3 goals, which are explicitly linked to executive remuneration. Over 90% of our Scope 3 emissions are from the downstream processing of iron ore, bauxite and other products by our customers. We have not set an overall quantitative Scope 3 emissions target, but instead engage with our customers to optimise their current operations toward low-emitting, higher efficiency processes; and foster partnerships with them, which we believe are more effective ways to advance actions. The shift toward green steel is underway and we are working on options to beneficiate our Pilbara ores to be better suited to green steel technologies and are exploring DRI pathways using sustainable resources such as hydrogen and biomass.

We expect that our annual incremental operating expenditure on building new teams and energy efficiency initiatives will be around US$200 million , in addition to R&D investment.

Our ambition is to increase our growth capital expenditure to around US$2 billion in 2023 and up to US$3 billion per year in 2024 -2025 to capture new growth opportunities with a focus on materials that are expected to see strong demand growth from the low carbon transition. This includes investment in future production of lithium at Rincon, copper at Oyu Tolgoi and Winu and high-grade iron ore from Simandou. Our budget for central greenfield exploration remains at approximately US$250 million annually, mainly focused on copper with a growing battery minerals programme.

For internal capital allocation purposes for major projects, a notional carbon price of US$75/t CO(2) e is used to incentivise investment in low carbon abatement options. The US$75/t CO(2) e price is derived from our analysis of the carbon mitigation options across our assets that are needed to achieve our emissions targets. This is unrelated to the different carbon prices we use in our core scenarios which are based on our assessment of climate policy ambition.

The impact of climate change and the execution of our climate change strategy on our financial statements is discussed below:

Climate change scenarios

Our strategy and approach to climate change are informed by an analysis of the interplay of global megatrends, explored through the lens of plausible global scenarios. These set the context for our industry and underpin our commodity price outlooks, portfolio and capital allocation choices and how we operate as a business. There are many plausible scenarios for global energy transition, all with different impacts on future commodity price outcomes. As part of our 2022 strategy process, we replaced our three scenarios described in the 2021 Annual Report and now focus on two core scenarios. These are used to generate a single central Reference Case for use in commodity pricing forecasts, valuation models and reserves and resources determination, as was the case in the prior year.

2. Basis of preparation and changes in accounting policies (continued)

These changes in scenarios represent an evolution of our interpretation and estimations in the current year, not a change in accounting policy, and as such we have not restated comparative information. Our two core scenarios are:

- Competitive Leadership scenario, limiting global warming to approximately 2degC by 2100, reflects a rapidly developing world of high growth and strong climate action post-2030 with change driven by policy and competitive innovation. As a result, we expect that countries achieve their Glasgow Climate Pact commitments. Global weighted average carbon prices are forecast to rise rapidly at an average of 8% per year over the next three decades, reaching US$42/tCO(2) e in 2030, and rising rapidly post-2030 to incentivise significant mitigation in industrial sectors post-2030.

- Fragmented Leadership scenario, with global warming exceeding 2.5degC by 2100, is characterised by limited progress on policy reform with volatile low growth. We expect that nations eventually achieve their 2030 Nationally Determined Contributions as agreed in Paris in 2015 but fail to progress towards long term carbon goals agreed at the UN Climate Summit COP26 Glasgow. Global weighted average carbon prices are forecast to rise slowly, at an average of 2.9% per year over the period to 2050, reaching US$42 in 2030; but remain too low post-2030 to incentivise significant mitigation in industrial sectors resulting in flat global emissions post-2030.

At the UN Climate Summit in late 2022 (COP27), there was broad recognition that the pace of decarbonisation across the global economy is too slow to limit warming to 1.5degC and that current climate policies in many countries are not yet aligned with their stated ambitions. Consequently, neither of our two core scenarios is consistent with the expectation of climate policies required to accelerate the global transition to meet the stretch goal of the Paris Agreement. Although our operational emissions reduction targets align with the goals of the Paris Agreement, our two core scenarios do not. Consequently, we also assess our sensitivity and test the economic performance of our business against a scenario we have developed to reflect our view of the global actions required to meet the stretch goal of the Paris Agreement. We refer to this Paris-aligned scenario as the Aspirational Leadership scenario.

Importantly none of our three scenarios are considered a definitive representation for our assessment of the future impact of climate change on the Group. Scenario modelling has inherent limitations and by its nature allows a range of possible outcomes to be considered where it is impossible to predict which outcome is likely.

The Aspirational Leadership scenario reflects a world of high growth, significant social change and accelerated climate action. Global weighted average carbon prices rise rapidly - at an average of 9.3% per year over the next three decades - reaching $59/tCO2e in 2030 and incentivise rapid and deep reductions in industrial emissions post-2030. Despite geopolitical differences, major economies work together through multilateral frameworks and proactively work towards limiting temperature change to 1.5degC by 2050. The Aspirational Leadership scenario is a commodity sales price and carbon tax sensitivity, with all other inputs remaining equal to our Reference Case; and is built by design to reach net-zero emissions globally by 2050 and help us better understand the pathways to meet the Paris Agreement goal, and what this could mean for our business. It is used for strategy and risk discussions, including analysis of sensitivity to our view of a Paris-aligned pathway and comparison of relative economic performance to our core scenarios.

2. Basis of preparation and changes in accounting policies (continued)

We do not publish the commodity price forecasts associated with these scenarios as to do so would weaken our position in commercial negotiations and might give rise to concerns from other market participants.

Impacts of climate change pricing scenarios on our portfolio, low-carbon transition risks and opportunities

Through our strategy process we compare the economic performance of our portfolio under our two core scenarios and the Aspirational Leadership scenario and this indicates that overall the economic performance of our portfolio would be stronger in scenarios with proactive climate action, particularly in relation to aluminium, copper and higher-grade iron ore.

We anticipate that all our commodities are needed in the low-carbon transition, but estimate that the demand varies significantly between our scenarios. We expect that copper demand will rise from a 2020 base by 65-150% by 2050 across the three scenarios to support a rapid rise in renewable generation while lithium is expected to be a fundamental ingredient in electric vehicle batteries and grid-firming energy storage solutions. Demand for aluminium is expected to grow for use in energy-efficient lightweight vehicles with demand for aluminium semi-fabricated products more than doubling in the period 2021-50 in Aspirational Leadership and Competitive Leadership scenarios, with moderate demand growth in Fragmented Leadership. Our access to self-generated hydro power is a source of competitive advantage for our aluminium business in Canada.

We forecast that global iron ore demand will remain strong with a premium on higher grade ore needed for the production of green steel, such as that from our IOC products and the planned investment in Simandou, which increases in our Aspirational Leadership and Competitive Leadership scenarios. In our Aspirational Leadership scenario, accelerated switching to green steel and increasing scrap use reduces the relative value of low-grade iron ore in the Pilbara.

We will need to carefully monitor and manage transition risks linked to our operational Scope 1 and 2 emissions and value-chain Scope 3 emissions. In particular, we expect the decarbonisation of our assets to benefit from the implementation of new technologies. The pace of technological development is uncertain, which could delay or increase the cost of our decarbonisation efforts.

Our Aspirational Leadership scenario predicts the Group's overall economic performance would fall between the Fragmented Leadership and Competitive Leadership scenarios. This reflects higher estimated economic performance for our copper and aluminium businesses in the Aspirational Leadership scenario, based on their higher price profiles, offset by higher expected carbon penalties across our operating jurisdictions, and lower prices for lower grade iron ore products. Refer below for our assessment of the accounting implications of forecast commodity pricing in the Aspirational Leadership scenario.

Physical risk

In 2022, we launched the Physical Resilience Programme across the Group. During the year we commenced a physical risk and resilience assessment across prioritised risk areas: the entire Pilbara iron ore operation and the Saguenay aluminium operations focused on Lac Saint-Jean. Our ongoing review processes, including impairment assessments, have not identified any material accounting impacts to date. For example, in 2022, no write-offs are necessary in the Pilbara, where certain infrastructure assets, such as transmission lines, that have reached the end of their natural lives are being replaced with climate resilient infrastructure.

2. Basis of preparation and changes in accounting policies (continued)

In addition, we do not foresee the renewal of our contractual water rights in Canada that have been classified as indefinite-lived intangible assets to be at risk from climate change. Further, closure planning considers future climate change projections at each step of the process to support safe and appropriate final landform design. In 2023, we will progress a Group-wide top-down assessment to further understand the risks and opportunities associated with physical climate change and to quantify any financial impacts, in addition to the site-specific bottom-up assessments, which will continue in the foreseeable future.

Accounting judgments and estimates

Global decarbonisation and the world's energy transition continues to evolve, with the potential to materially impact our future financial results as our significant accounting judgments and key estimates are updated to reflect prevailing circumstances. In response, carrying values of assets and liabilities could be materially affected in future periods. Our current strategy and approach to decarbonise our operations and achieve our scope 1 and 2 emissions targets is considered in our significant judgments and key estimates reflected in these financial results.

Impacts from executing our climate change strategy - accounting for capital expenditure and operating costs underpinning our Climate Action Plan

Given the significant investment we are making to abate our carbon emissions, we have considered the potential for asset obsolescence, with a particular focus on our Pilbara operations where we are prioritising investment in renewables to switch away from natural gas power generation. No material changes to accounting estimates to useful economic lives have been necessary due to the anticipated use of these assets for firming support in the transition. As the renewable projects progress, it is possible that such adjustments may be identified in the future. The renewable assets in the Pilbara are our own built and operated arrangements and follow normal rules on capitalisation of directly attributable costs. The solar power purchase agreement for RBM is accounted for on an accrual basis as energy is produced.

There are no accounting impacts to date from the programme to develop renewable energy solutions for our Queensland aluminium assets as the work has not been completed and commercial terms have not been agreed. Large scale renewable power off-take arrangements may, in the future, require complex derivative measurement or lease accounting depending on contractual terms.

No adjustments to useful lives of the existing fleet have been identified to date as a result of planned fleet electrification in the Pilbara and the purchase of battery-powered locomotives. The solutions are still in development or pilot stages and the gradual fleet replacement is intended to be part of the normal lifecycle renewal of trucks. Depending on technological development, which is highly uncertain, this could lead to accelerated depreciation in the future. Similarly, our target to have net zero vessels in our portfolio by 2030 has not given rise to accounting adjustments to date, as the replacement is planned as part of the lifecycle renewal. The energy efficiency digestion project at Queensland Alumina refinery does not reduce the economic lives of the underlying alumina assets but could lower operating costs and improve margins. The expenditure on our own carbon abatement projects and technology advancements follows existing accounting policies on cost capitalisation, research and development costs.

2. Basis of preparation and changes in accounting policies (continued)

Use of sensitivities to Paris aligned accounting

The forecast commodity prices (including carbon prices) informed by a blend of our two scenarios are used pervasively in our financial processes from budgeting, forecasting, capital allocation and project evaluation to the determination of ore reserves. In turn, these prices are used to derive critical accounting estimates included as inputs to impairment testing, estimation of remaining economic life for units of production depreciation and discounting closure and rehabilitation provisions. These prices represent our best estimate of actual market outcomes based on the range of future economic conditions regarding matters largely outside our control, as required by IFRS. As neither of our core scenarios represents the Group's view of the goals of the Paris Agreement, our commodity price assumptions used in accounting estimates are not consistent with the expectation of climate policies required to accelerate the global transition to meet the goals of the Paris Agreement. As described above, we use our Aspirational Leadership scenario to understand the sensitivity of these estimates to Paris aligned assumptions.

Under the Aspirational Leadership scenario, which is not used in the preparation of these financial statements, nor for budgeting purposes, the economic performance of copper and aluminium is expected to be stronger under supply and demand forward pricing curves which we believe will be consistent with the Paris Agreement. It is possible therefore, under the right conditions, that historical impairments associated with these assets could reverse. We recognised an impairment of US$202 million during the year for the Boyne smelter cash-generating unit, triggered by economic and operating performance of the smelter. When measuring the recoverable amount for this cash-generating unit we utilised net present value of cash flows to the end of the existing joint venture agreements in 2029, which also coincides with the Group's targeted carbon emission reductions by 2030. The Group continues to evaluate lower emission power solutions for the smelter that could extend its life to at least 2040. In such circumstances, the net present value of forecast future cash flows could support the reversal of past impairments. Both the recorded outcome and the sensitivity represent a reduction in emissions that we considered to be Paris-aligned.

In the Aspirational Leadership scenario the prices for lower-grade iron ore are supported in the medium term by an assumed underlying increase in GDP-driven demand. However, in the longer term we assume the pricing for lower grade iron ore to be weaker than in our core scenarios. This will depend on the development of low-emissions steel technology, the pace of which is uncertain, but is expected to be offset by higher prices for higher-grade iron ore. This is unlikely to give rise to impairment triggers for 2022 or in the foreseeable future due to the high returns on capital employed in the Pilbara.

We completed the divestments of our coal businesses in 2018 and no longer mine coal, but retained a contingent royalty from these divestments. Recent favourable coal prices exceeded contractual benchmark levels and resulted in the cash royalty receipt of US$36 million during 2022. We also carry royalty receivables of US$209 million on our balance sheet at 31 December 2022, measured at fair value. The fair value of this balance may be adversely impacted in the future by a faster pace of transition to a low carbon economy, but this impact is not expected to be material.

2. Basis of preparation and changes in accounting policies (continued)

Closure dates and cost of closure are also sensitive to climate assumptions, but no material changes have been identified in the year specific to climate change that would require a material revision to the provisions in 2022. For those commodities with higher forward price curves under the Aspirational Leadership scenario, it may be economical to mine lower mineral grades, which could result in the conversion of additional Mineral Resources to Ore Reserves and therefore longer dated closure.

Overall, based on the Aspirational Leadership scenario pricing outcomes, and with all other assumptions remaining consistent with those applied to our 2022 financial statements, we do not currently envisage a material adverse impact of the 1.5degC Paris-aligned sensitivity on asset carrying values, remaining useful life, or closure and rehabilitation provisions for the Group. It is possible that other factors may arise in the future, which are not known today, that may impact this assessment.

Alternative performance measures

The Group presents certain alternative performance measures (APMs), including underlying earnings, which are reconciled to directly comparable IFRS financial measures on pages 69 to 78 of this report. These APMs are used by management to assess the performance of the business and may therefore be useful to investors. They are not a substitute for the IFRS measures and should be considered supplementary to those measures.

Reconciliation with Australian Accounting Standards

Our financial statements have been prepared in accordance with IFRS which differs in certain respects from the version of International Financial Reporting Standards that is applicable in Australia, referred to as Australian Accounting Standards (AAS). We are required to disclose the effect of the adjustments to our consolidated income statement, consolidated total comprehensive income/(loss) and consolidated shareholders' funds if our accounts were prepared under the version of IFRS that is applicable in Australia. This is in order to satisfy the obligations of Rio Tinto Limited to prepare consolidated accounts under Australian company law, as amended by an order issued by the Australian Securities and Investments Commission on 16 July 2021.

Prior to 1 January 2004, our financial statements were prepared in accordance with UK GAAP. Under IFRS, goodwill on acquisitions prior to 1998, which was eliminated directly against equity in the Group's UK GAAP financial statements, has not been reinstated. This was permitted under the rules governing the transition to IFRS set out in IFRS 1. The equivalent Australian Standard, AASB 1, does not provide for the netting of goodwill against equity. As a consequence, shareholders' funds under AAS include the residue of such goodwill, which amounted to US$380 million at 31 December 2022 (2021: US$377 million).

Save for the exception described above, the Group's financial statements prepared in accordance with IFRS are consistent with the requirements of AAS.

3. Segmental information

Our management structure is based on principal product groups (PG) together with global support functions whose leaders make up the Executive Committee. The Executive Committee members each report directly to our Chief Executive who is the chief operating decision maker (CODM) and is responsible for allocating resources and assessing performance of the operating segments. The CODM's primary measure of profit is underlying EBITDA. Finance costs and net debt are managed on a Group-wide basis and are therefore excluded from the segmental results.

Our reportable segments are as follows:

 
Reportable segment  Principal activities 
==================  =================================================================== 
                    Iron ore mining and salt and gypsum production in 
Iron Ore             Western Australia. 
==================  =================================================================== 
Aluminium           Bauxite mining; alumina refining; aluminium smelting. 
==================  =================================================================== 
Copper              Mining and refining of copper, gold, silver, molybdenum 
                     and other by-products; exploration activities together 
                     with the Simandou iron ore project, which was the 
                     responsibility of the Copper product group chief executive 
                     during 2022. 
==================  =================================================================== 
Minerals            Includes businesses with products such as borates, 
                     titanium dioxide feedstock together with the Iron 
                     Ore Company of Canada (iron ore mining and iron concentrate/pellet 
                     production). Also includes diamond mining, sorting 
                     and marketing. 
==================  =================================================================== 
 

The Rio Tinto financial information by business unit provided on pages 65 to Error! Bookmark not defined. provides additional voluntary business unit disclosure which the Group considers useful to the users of the financial statements.

3. Segmental information (continued)

 
 
                                                    2022                                                                  2021 
----------------  ----------------------------------------------------------------------  --------------------------------------------------------------------- 
                                                                                                                                                     (Adjusted) 
Year ended Year               Segmental               Underlying                 Capital              Segmental               Underlying                Capital 
 ended 31                    revenue(a)                EBITDA(b)          expenditure(c)             revenue(a)                EBITDA(b)         expenditure(c) 
 December                          US$m                     US$m                    US$m                   US$m                     US$m                   US$m 
================  =====================  =======================  ======================  =====================  =======================  ===================== 
Iron Ore                         30,906                   18,612                   2,940                 39,582                   27,592                  3,947 
Aluminium                        14,109                    3,672                   1,377                 12,695                    4,382                  1,300 
Copper                            6,699                    2,376                   1,622                  7,827                    3,969                  1,328 
Minerals                          6,754                    2,419                     679                  6,481                    2,603                    644 
================  =====================  =======================  ======================  =====================  =======================  ===================== 
Reportable 
 segments total                  58,468                   27,079                   6,618                 66,585                   38,546                  7,219 
Other Operations                    192                     (16)                      53                    251                     (28)                   (13) 
Inter-segment 
 transactions                     (256)                       24                                          (268)                       42 
Share of equity 
 accounted 
 units(d)                       (2,850)                                                                 (3,073) 
Central pension 
 costs, 
 share-based 
 payments, 
 insurance and 
 derivatives                                                 377                                                                     110 
Restructuring, 
 project and 
 one-off costs                                             (173)                                                                    (80) 
Central costs                                              (766)                                                                   (613) 
Central 
 exploration and 
 evaluation 
 expenditures                                              (253)                                                                   (257) 
Proceeds from 
 disposal of 
 property, plant 
 and equipment                                                                         -                                                                     61 
Other items                                                                           79                                                                    117 
================  =====================  =======================  ======================  =====================  =======================  ===================== 
Consolidated 
 sales 
 revenue/Capital 
 expenditure                     55,554                                            6,750                 63,495                                           7,384 
----------------  ---------------------  -----------------------  ----------------------  ---------------------  -----------------------  --------------------- 
Underlying 
 EBITDA                                                   26,272                                                                  37,720 
----------------  ---------------------  -----------------------  ----------------------  ---------------------  -----------------------  --------------------- 
 

(a) Segmental revenue includes consolidated sales revenue plus the equivalent sales revenue of equity accounted units in proportion to our equity interest (after adjusting for sales to/from subsidiaries). Segmental revenue measures revenue on a basis that is comparable to our underlying EBITDA metric.

(b) Underlying EBITDA (calculated on page 47 ) is reported to provide greater understanding of the underlying business performance of Rio Tinto's operations.

(c) Capital expenditure for reportable segments includes the net cash outflow on purchases less disposals of property, plant and equipment, capitalised evaluation costs and purchases less disposals of other intangible assets. The details provided include 100% of subsidiaries' capital expenditure and Rio Tinto's share of the capital expenditure of joint operations. In 2022, we have excluded capitalised expenditure relating to equity accounted units and have adjusted prior year comparatives for this change in definition.

(d) Consolidated sales revenue includes subsidiary sales of US$50 million (2021: US$44 million; 2020: US$34 million) to equity accounted units which are not included in segmental revenue. Segmental revenue includes the Group's proportionate share of product sales by equity accounted units (after adjusting for sales to subsidiaries) of US$2,900 million (2021: US$3,117 million; 2020: US$2,441 million) which are not included in consolidated sales revenue.

(d)

3. Segmental information (continued)

Reconciliation of profit after tax to underlying EBITDA

Underlying EBITDA represents profit before taxation, net finance items, depreciation and amortisation adjusted to exclude the EBITDA impact of items, which do not reflect the underlying performance of our reportable segments.

Items excluded from profit after tax are those gains and losses that, individually or in aggregate with similar items, are of a nature and size to require exclusion in order to provide additional insight into the underlying business performance. The following items are excluded from profit after tax in arriving at underlying EBITDA in each year irrespective of materiality:

   -          Depreciation and amortisation in subsidiaries and equity accounted units; 
   -          Taxation and finance items in equity accounted units; 
   -          Taxation and finance items relating to subsidiaries; 
   -          Unrealised gains/(losses) on embedded derivatives not qualifying for hedge accounting; 
   -          Net gains/(losses) on disposal of interests in subsidiaries; 
   -          Impairment charges net of reversals; 
   -          The underlying EBITDA of discontinued operations; 

- Adjustments to closure provisions where the adjustment is associated with an impairment charge and for legacy sites where the disturbance or environmental contamination relates to the pre-acquisition period.

In addition, there is a final judgmental category which includes, where applicable, other credits and charges that, individually or in aggregate if of a similar type, are of a nature or size to require exclusion in order to provide additional insight into underlying business performance. In 2022 this category included the gain recognised by Kitimat relating to LNG Canada's project and the gain recognised upon sale of the Cortez royalty. In 2021 the category included the changes in closure estimates at Energy Resources of Australia and Gove Refinery.

 
                                                                        2022              2021 
Year ended 31 December                                                  US$m              US$m 
Profit after tax for the year                                         13,076            22,575 
Taxation                                                               5,586             8,258 
========================================================  ==================  ================ 
Profit before taxation                                                18,662            30,833 
Depreciation and amortisation in subsidiaries excluding 
 capitalised depreciation(a)                                           4,871             4,525 
Depreciation and amortisation in equity accounted units                  470               497 
Finance items in subsidiaries                                          1,846                26 
Taxation and finance items in equity accounted units                     640               759 
(Gains)/Losses on embedded commodity derivatives not 
 qualifying for hedge accounting (including foreign 
 exchange)                                                               (6)                51 
Impairment charges net of reversals(b)                                    52               269 
Gain recognised by Kitimat relating to LNG Canada's 
 project(c)                                                            (116)             (336) 
Change in closure estimates (non-operating and fully 
 impaired sites)(d)                                                      180             1,096 
Loss on disposal of interests in subsidiary(b)                           105                 - 
Gain on sale of the Cortez Royalty(e)                                  (432)                 - 
Underlying EBITDA                                                     26,272            37,720 
--------------------------------------------------------  ------------------  ---------------- 
 

3. Segmental information (continued)

(a) Depreciation and amortisation in subsidiaries for the year ended 31 December 2022 is net of capitalised depreciation of US$139 million (31 December 2021: US$172 million).

(b) Refer to note 5

(c) During the first half of 2022, LNG Canada elected to terminate their option to purchase additional land and facilities for expansion of their operations at Kitimat, Canada. The resulting gain has been excluded from underlying EBITDA consistent with prior years as it is part of a series of transactions that together were material. On 3 December 2021 we gained control over a new wharf at Kitimat, Canada that was built and paid for by LNG Canada. The gain on recognition was excluded from underlying EBITDA on the grounds of individual magnitude and consistency with the associated impairment charge in 2021, refer to Note 5.

(d) In 2022 the charge relates to re-estimates of underlying closure cash flows for legacy sites where the environmental damage preceded ownership by Rio Tinto. On 2 February 2022, Energy Resources of Australia released preliminary findings from its reforecast of the total undiscounted cost schedule for the Ranger rehabilitation project. Information available from this study resulted in the Group recording an increase to the closure provision of US$510 million at 31 December 2021. Other increases to closure estimates charged to the income statement in 2021 relate to Diavik, Gove refinery, and a number of the Group's legacy sites where the environmental damage preceded ownership by Rio Tinto. The adjustments at Energy Resources Australia and Gove refinery were recognised in the income statement as these are non-operating sites, and excluded from underlying earnings due to the magnitude of the individual updates and materiality when aggregated. In 2020 we recognised an increase in the Diavik closure provision based on preliminary Pre-Feasibility Study findings. On completion of the study in 2021 a true up was recorded in the income statement and excluded from underlying EBITDA in line with the treatment of the initial increase in 2020, which was excluded from underlying EBITDA as Diavik was fully impaired during the year.

(e) On 2 August 2022, we completed the sale of a gross production royalty which was retained following the disposal of the Cortez Complex in 2008. The gain recognised on sale of the royalty has been excluded from underlying EBITDA on the grounds of individual magnitude.

4. Segmental information - additional information

Consolidated sales revenue by destination

 
                                                                          Year ended 31 December 
----------------------------------------------  -------------------------------------------------------------------------- 
                                                           2022             2021                 2022                 2021 
                                                              %                %                 US$m                 US$m 
 Consolidated sales revenue by destination(a)                           Adjusted                                  Adjusted 
----------------------------------------------  ---------------  ---------------  -------------------  ------------------- 
Greater China(b)                                         54.3 %           59.7 %               30,172               37,878 
United States of America                                 15.9 %           12.6 %                8,823                8,012 
Asia (excluding Greater China and 
 Japan)                                                   7.1 %            6.9 %                3,937                4,415 
Japan                                                     7.4 %            7.9 %                4,091                5,012 
Europe (excluding UK)                                     6.5 %            5.2 %                3,618                3,271 
Canada                                                    3.1 %            2.6 %                1,743                1,677 
Australia                                                 1.9 %            1.8 %                1,047                1,122 
UK                                                        0.3 %            0.4 %                  182                  243 
Other countries                                           3.5 %            2.9 %                1,941                1,865 
----------------------------------------------  ---------------  ---------------  -------------------  ------------------- 
                                                          100.0            100.0 
Consolidated sales revenue                                    %                %               55,554               63,495 
----------------------------------------------  ---------------  ---------------  -------------------  ------------------- 
 

(a) Consolidated sales revenue by geographical destination is based on the ultimate country of the product's destination, if known. Where the ultimate destination is not known, we have defaulted to the shipping address of the customer. Rio Tinto is domiciled in both the UK and Australia.

(b) Consolidated sales revenue by destination has been adjusted to classify Taiwan and China together as 'Greater China'; previously Taiwan was included in Asia (excluding Greater China and Japan). This change has resulted in a decrease in 2021 revenue attributable to Asia (excluding Greater China and Japan) of: 2.5% and US$1,570 million.

Consolidated sales revenue by product

 
                                                Year ended 31 December                                    Year ended 31 December 
                                                          2022                                                      2021 
                              -----------------------------------------------------------  ----------------------------------------------------- 
                                        Revenue 
                                           from 
                                      contracts 
                                                                                                   Revenue 
                                           with               Other          Consolidated   from contracts            Other 
                                                                                    sales                                           Consolidated 
                                      customers          revenue(a)               revenue   with customers       revenue(a)        sales revenue 
                                           2022                2022                  2022             2021             2021                 2021 
 Consolidated sales revenue 
 by product                                US$m                US$m                  US$m             US$m             US$m                 US$m 
----------------------------  -----------------  ------------------  --------------------  ---------------  ---------------  ------------------- 
Iron ore                                 33,068               (267)                32,801           42,992            (796)               42,196 
Aluminium, alumina and 
 bauxite                                 13,955               (165)                13,790           12,336              103               12,439 
Copper                                    3,276                (80)                 3,196            3,229               96                3,325 
Industrial minerals 
 (comprising 
 titanium dioxide slag, 
 borates and salt)                        2,685                (16)                 2,669            2,114                3                2,117 
Gold                                        564                   9                   573            1,075                2                1,077 
Diamonds                                    816                   -                   816              501                -                  501 
Other products(b)                         1,710                 (1)                 1,709            1,837                3                1,840 
----------------------------  -----------------  ------------------  --------------------  ---------------  ---------------  ------------------- 
Consolidated sales revenue               56,074               (520)                55,554           64,084            (589)               63,495 
----------------------------  -----------------  ------------------  --------------------  ---------------  ---------------  ------------------- 
 

(a) Consolidated sales revenue includes both revenue from contracts with customers, accounted for under IFRS 15 and subsequent movements in provisionally priced receivables, accounted for under IFRS 9, and included in 'other revenue' above.

(b) "Other products" includes metallic co-products, molybdenum, silver and other commodities. Individually the revenue from each of these products is less than 15% of the total Other products category.

5. Impairment charges net of reversals

 
                                 Pre-tax                         Non-controlling                  Net              Pre-tax 
                                  amount            Taxation            interest               amount               amount 
                                    2022                2022                2022                 2022                 2021 
                                    US$m                US$m                US$m                 US$m                 US$m 
-------------------  -------------------  ------------------  ------------------  -------------------  ------------------- 
Other operations - 
 Roughrider                          150                   -                   -                  150                    - 
Aluminium - Pacific 
 Aluminium                         (202)                   -                   -                (202)                    - 
Aluminium - Kitimat                    -                   -                   -                    -                (269) 
Total impairment 
 charges net 
 of reversals                       (52)                   -                   -                 (52)                (269) 
-------------------  -------------------  ------------------  ------------------  -------------------  ------------------- 
 
Allocated as: 
Intangible assets                    150                                                                                 - 
Property, plant and 
 equipment                             -                                                                             (269) 
Investment in                      (202)                                                                                 - 
equity accounted 
units ("EAUs") 
Total impairment 
 charges net 
 of reversals                       (52)                                                                             (269) 
-------------------  -------------------  ------------------  ------------------  -------------------  ------------------- 
Comprising: 
Impairment 
 reversal/(charges 
 net of reversals)                                                                                150                (269) 
Impairment charges                                                                              (202)                    - 
related 
to EAUs (pre-tax) 
-------------------  -------------------  ------------------  ------------------  -------------------  ------------------- 
Total impairment 
 charges net 
 of reversals in 
 the financial 
 information by 
 business unit 
 (page 65 )                                                                                      (52)                (269) 
Taxation (including 
 related 
 to EAUs)                                                                                           -                   72 
Total impairment 
 charges net 
 of reversals in 
 the income 
 statement                                                                                       (52)                (197) 
-------------------  -------------------  ------------------  ------------------  -------------------  ------------------- 
 

2022

Other operations - Roughrider, Canada

On 17 October 2022, we completed the sale of the Roughrider uranium undeveloped project located in the Athabasca Basin in Saskatchewan, Canada for US$150 million (US$80 million in cash and US$70 million in shares of Uranium Energy Corp.). The project was fully impaired during the year ended 31 December 2017 due to significant uncertainty over whether commercially viable quantities of mineral resources could be identified at a future date. The sale therefore led to an impairment reversal in the current year. It also led to a loss on disposal being recognised of US$105 million arising from the recycling of the currency translation reserve to the income statement.

5. Impairment charges net of reversals (continued)

Aluminium - Pacific Aluminium, Australia and New Zealand

The operating and economic performance of the Boyne Smelter in Queensland, Australia was below our expectations in 2022. The plant operated with reduced capacity and the economic performance suffered due to the high cost of energy from the coal-fired Gladstone Power Station. These conditions have been identified as an impairment trigger. We have calculated a recoverable amount for the cash-generating unit based on post-tax cash flows, expressed in real terms and discounted using a post-tax rate of 6.6% over the period to 2029. This date was chosen as it coincides with both the remaining term of the Boyne Smelter joint venture agreements and the Group's Paris-aligned commitment to reduce carbon emissions by 50% by 2030 relative to the 2018 baseline. Despite the recent implementation of temporary energy price caps by the Australian Government, this resulted in an impairment charge of US$202 million, representing a full impairment of the carrying value of the Boyne Smelter investment in equity accounted unit. We are committed to the repowering of our aluminium smelter in Queensland with firmed renewable energy by 2030. For this reason, along with the coal price cap noted above, we have separated the Gladstone Power Station from the Boyne Smelter cash-generating unit. As a sensitivity we have considered the impact of a potential repowering of the smelter using commodity and energy price assumptions from our Aspirational Leadership scenario, with all other assumptions being unchanged. This would result in improved cash flows, including an extension of operations at the Boyne Smelter beyond current joint venture agreements through to 2040. The potential value uplift under this sensitivity is not part of our base valuation as it is dependent upon commercial agreements that are not currently in place, but could support the reversal of past impairments. Both the recorded outcome and the sensitivity, as described in "Impact of climate change on the Group" section in Note 2, are considered to be Paris-aligned.

2021

Aluminium - Kitimat, Canada

On 3 December 2021, we announced completion of the newly-constructed wharf at Kitimat. Construction spend was incurred by LNG Canada and therefore a gain of US$336 million representing the estimated fair value of the cost of construction was recorded and the carrying value of the Kitimat cash-generating unit (CGU) increased accordingly. Output from the smelter was reduced to 25% as a result of a workforce strike in mid-2021 and ramp-up to full capacity was expected to extend through into 2022. As a previously impaired CGU, and therefore carrying limited headroom, these factors were identified as conditions that could indicate that the uplifted carrying value may not be supportable and therefore the CGU was tested for impairment.

Using the fair value less cost of disposal methodology and discounting real-terms post-tax cash flows at 6.6%, we recognised a post-tax impairment charge of US$197 million (pre-tax US$269 million) representing the difference between the recoverable amount (US$3,126 million) and the carrying value (US$3,323 million).

6. Taxation

Prima facie tax reconciliation

 
                                                                                                        2021 
                                                                              2022                      US$m 
Year ended 31 December                                                        US$m               Adjusted(i) 
--------------------------------------------------------  ------------------------  ------------------------ 
Profit before taxation(a)                                                   18,662                    30,833 
 
Prima facie tax payable at UK rate of 19% (2021: 
 19%)(b)                                                                     3,546                     5,858 
Higher rate of taxation of 30% on Australian earnings 
 (2021: 30%)                                                                 1,550                     2,598 
Other tax rates applicable outside the UK and Australia                       (17)                       103 
Tax effect of profit from equity accounted units, 
 related impairments and expenses(a)                                         (109)                     (198) 
Impact of changes in tax rates                                                (11)                         - 
Resource depletion allowances                                                 (40)                      (52) 
Recognition of previously unrecognised deferred 
 tax assets(c)                                                               (261)                     (212) 
Write-down of previously recognised deferred tax 
 assets(d)                                                                     820                         - 
Utilisation of previously unrecognised deferred 
 tax assets(e)                                                                (37)                     (200) 
Unrecognised current year operating losses(f)                                  212                       107 
Adjustments in respect of prior periods(g)                                   (222)                        40 
Other items(h)                                                                 155                       214 
--------------------------------------------------------  ------------------------  ------------------------ 
Total taxation charge                                                        5,586                     8,258 
--------------------------------------------------------  ------------------------  ------------------------ 
 

(a) The Group profit before tax includes profit after tax of equity accounted units. Consequently, the tax effect on the profit from equity accounted units is included as a separate reconciling item in this prima facie tax reconciliation.

(b) As a UK headquartered and listed Group, the reconciliation of expected tax on accounting profit to tax charge uses the UK corporation tax rate to calculate the prima facie tax payable. Rio Tinto is also listed in Australia, and the reconciliation includes the impact of the higher tax rate in Australia where a significant proportion of the Group's profits are currently earned. The impact of other tax rates applicable outside the UK and Australia is also included. The weighted average statutory corporate tax rate on profit before tax is approximately 29% (31 December 2021: 29%).

(c) The recognition of previously unrecognised deferred tax assets relates primarily to Oyu Tolgoi where ongoing progress towards sustainable underground production in the current and comparative periods reduces the risk of tax losses that expire if not recovered against taxable profits within eight years. In the comparative period to 31 December 2021 the recognition of previously unrecognised deferred tax assets also included the recognition of prior year deferred tax assets in our Australian Aluminium business.

(d) The write-down of previously recognised deferred tax assets relates to deferred tax assets of our US businesses. The enactment of the US Inflation Reduction Act of 2022 in August included a new Corporate Alternative Minimum Tax (CAMT) regime which applies a minimum tax rate of 15% on accounting profits. As a result of the new legislation, which does not give relief for some Federal deferred tax assets, the deferred tax assets previously recognised have been written down.

(e) In 2021, the utilisation of previously unrecognised deferred tax assets arose due to higher than forecast profits in the year at Oyu Tolgoi.

6. Taxation (continued)

(f) Unrecognised current year operating losses include tax losses around the Group for which no tax benefit is currently recognised due to uncertainty regarding whether suitable taxable profits will be earned in future to obtain value for the tax losses.

(g) In the year to 31 December 2022, adjustments in respect of prior periods includes amounts related to the settlement of all tax disputes with the Australian Tax Office for the years 2010 to 2021.

(h) Other items include non-deductible costs and withholding taxes, and various adjustments to provisions for taxation, the most significant of which relate to transfer pricing matters, including issues previously under discussion with the Australian Tax Office.

(i) The presentation of the prima facie tax reconciliation comparatives has been revised. We have allocated the tax relating to exclusions (historically shown separately in the financial statements) to the appropriate tax line items above. The presentation of the impact of including profit after tax from equity accounted units within the Group profit before tax has also been revised as described in note (a) above.

Future tax developments

We continue to monitor the Organisation for Economic Co-operation and Development's (OECD) Two Pillar Solution to address the Tax Challenges Arising from the Digitalisation of the Economy. Pillar Two of those proposals seeks to apply a 15% global minimum tax and is expected to be enacted in 2023 with application to the Group from 1 January 2024. We note the release in July by the UK Government of draft legislation to implement a "Multinational Top-up Tax" on a country-by-country basis in line with Pillar Two.

We are in the process of evaluating the cash tax and accounting implications of the Pillar Two global minimum tax rules under IAS 12. Recognition of any impact will only occur once legislation has been substantively enacted.

7. Acquisitions and disposals

Acquisitions

2022

Following approval from Australia's Foreign Investment Review Board (FIRB), on 29 March 2022 we completed the acquisition of Rincon Mining Pty Limited, the owner of a lithium project in Argentina. Total cash consideration was US$825 million. In determining whether Rincon's set of activities is a business, we have assessed whether it has inputs and substantive processes which together significantly contribute to the ability to create outputs. Based on this assessment, we have concluded that Rincon does not meet the definition of a business as defined by IFRS 3 "Business Combinations" and therefore no goodwill has been recorded. The transaction has therefore been treated as an asset purchase with US$822 million of capitalised exploration and evaluation recorded for the principal economic resource. The balance of total consideration has been allocated to property, plant & equipment and other assets/liabilities. For the Group cash flow statement we determined that, since Rincon constitutes a group of companies, it is appropriate to present the cash outflow as "Acquisitions of subsidiaries, joint ventures and associates" rather than as separate asset purchases even though it did not meet the definition of a business combination.

7. Acquisitions and disposals (continued)

On 31 August 2022 we made a US$25 million investment in McEwen Copper Inc. through our copper leaching technology venture, Nuton. We accounted for our holding in McEwen Copper Inc as an investment in associate, given our representation on the board.

On 16 December 2022 we acquired the remaining 49% share of Turquoise Hill Resources for expected consideration of US$3.2 billion, inclusive of transaction costs. This transaction was not classified as a business combination as it related to the purchase of non-controlling interests in an entity already consolidated as a subsidiary. Accordingly the transaction did not result in the remeasurement of assets or liabilities and has been accounted for in the statement of equity as an adjustment to non-controlling interests and retained earnings.

At 31 December 2022 consideration paid amounted to US$2,961 million (including US$33 million of transaction costs, with further transaction costs of US$41 million expected to be paid in 2023). Certain shareholders exercised their right to dissent to the transaction. In accordance with the terms of the circular, those dissenting shareholders have received initial consideration of C$34.4 per share, with final consideration depending on the outcome and timing of dissent proceedings. We have included within other provisions (note 9) US$211 million for additional consideration to be paid to the dissenting shareholders representing the difference between their initial consideration and C$43 per share paid to all other shareholders.

2021

On 18 November 2021, we announced that we had completed the acquisition of the 40% share in the Diavik Diamond Mine in the Northwest Territories of Canada held by Dominion Diamond Mines, becoming the sole owner as a result. The transaction did not meet the definition of a business combination and therefore the incremental assets and liabilities were treated as an asset purchase. Prior to purchase, we recognised our existing 60% share of assets, revenues and expenses, with liabilities recognised according to its contractual obligations, and a corresponding 40% receivable or contingent asset representing the co-owner's share where applicable. Receivables relating to the co-owner's share were de-recognised and treated as part of the net purchase consideration on completion.

Disposals

As summarised in note 5, we sold our Roughrider uranium undeveloped project on 17 October 2022 for consideration of US$150 million (US$80 million in cash and US$70 million in shares of Uranium Energy Corp). There were no other material disposals in 2022 or 2021.

8. Cash and cash equivalents

Closing cash and cash equivalents less overdrafts for the purposes of the cash flow statement differs from cash and cash equivalents on the Group balance sheet as per the following reconciliation:

 
                                                    31 December  31 December 
                                                           2022         2021 
-------------------------------------------------- 
Closing cash and cash equivalents less overdrafts          US$m         US$m 
--------------------------------------------------  -----------  ----------- 
Balance per Group balance sheet                           6,775       12,807 
Bank overdrafts repayable on demand (unsecured)             (1)          (2) 
Balance per Group cash flow statement                     6,774       12,805 
--------------------------------------------------  -----------  ----------- 
 

9. Provisions including post-retirement benefits

 
                                                               Post-retirement 
                                                                      benefits 
                                                                     and other                    Close-down, 
                                                                      employee                    restoration                Other           Total        Total 
                                                               entitlements(a)           and environmental(b)           provisions            2022         2021 
----------------------------------------------- 
                                                                          US$m                           US$m                 US$m            US$m         US$m 
-----------------------------------------------  -----------------------------  -----------------------------  -------------------  --------------  ----------- 
Opening Balance                                                          2,492                         14,542                1,002          18,036       17,665 
Change in accounting policy(c)                                               -                              -                   17              17            - 
===============================================  =============================  =============================  ===================  ==============  =========== 
Revision to opening balance                                              2,492                         14,542                1,019          18,053       17,665 
Adjustment on currency translation                                        (99)                          (699)                 (43)           (841)        (546) 
Adjustments to mining properties/right 
 of use assets: 
 
  *    increases to existing and new provisions                              -                            520                    4             524          521 
Charged/(credited) to profit: 
 
  *    increases to existing and new provisions                            231                            541                  365           1,137        2,130 
 
  *    unused amounts reversed                                            (12)                           (72)                 (66)           (150)        (250) 
 
  *    exchange losses on provisions                                         -                             17                    -              17           23 
 
  *    amortisation of discount(d)                                           -                          1,517                    2           1,519          418 
Utilised in the period                                                   (254)                          (609)                (176)         (1,039)        (900) 
Re-measurement gains recognised 
 in other comprehensive income                                           (701)                              -                    -           (701)        (687) 
Transfers and other movements(e)                                             1                              2                  193             196        (338) 
-----------------------------------------------  -----------------------------  -----------------------------  -------------------  --------------  ----------- 
Closing balance                                                          1,658                         15,759                1,298          18,715       18,036 
-----------------------------------------------  -----------------------------  -----------------------------  -------------------  --------------  ----------- 
Balance sheet analysis: 
Current                                                                    353                          1,142                  554           2,049        2,106 
Non-current                                                              1,305                         14,617                  744          16,666       15,930 
-----------------------------------------------  -----------------------------  -----------------------------  -------------------  --------------  ----------- 
Total                                                                    1,658                         15,759                1,298          18,715       18,036 
-----------------------------------------------  -----------------------------  -----------------------------  -------------------  --------------  ----------- 
 

(a) The provision for post-retirement benefits and other employee entitlements includes a provision for long service leave of US$271 million (31 December 2021: US$272 million), based on the relevant entitlements in certain Group operations and includes US$32 million (31 December 2021: US$60 million) of provision for redundancy and severance payments.

9. Provisions including post-retirement benefits (continued)

(b) Close-down, restoration and environmental liabilities at 31 December 2022 have not been adjusted for closure-related receivables amounting to US$351 million (31 December 2021: US$410 million) due from the ERA trust fund and other financial assets held for the purposes of meeting closure obligations. These are included within "Receivables and other assets" on the balance sheet.

(c) The way we calculate the cost of fulfilling a contract when assessing whether it is onerous has changed with the adoption of the amendments of IAS 37 (refer to note 2). This has led to an increase in the opening provision by US$17 million .

(d) The present value of close-down, restoration and environmental liabilities has been uplifted due to the re-measurement of underlying cash flows for inflation in the year. The amortisation of discount US$1,517 million (31 December 2021: US$415 million) is used to systematically uplift cash-flows including a forecast of full year inflation at the start of each reporting period. At the end of each half-year we updated the underlying cash-flows for the latest estimate of experienced inflation for the current financial year and recorded this as "changes to existing provisions". For operating sites this adjustment usually results in a corresponding adjustment to Property, Plant and Equipment and for closed and fully impaired sites the adjustment is charged or credited to the income statement.

(e) Transfers and other movements includes US$211 million consideration to be paid to the dissenting shareholders of the Turquoise Hill Resources transaction. It represents the difference between their initial consideration of C$34.4 per share and C$43 per share paid to all other shareholders, with the final amount and timing to be determined by dissent proceedings. As a transaction with shareholders of a subsidiary in their capacity as owners, this adjustment has been made through equity.

(e)

10. Financial Instruments

Valuation hierarchy of financial instruments carried at fair value on a recurring basis

The table below shows the classifications of our financial instruments by valuation method in accordance with IFRS 13 at 31 December 2022 and 31 December 2021.

All instruments shown as being held at fair value have been classified as fair value through the profit and loss unless specifically footnoted.

 
                                                At 31 December 2022                                                               At 31 December 2021 
                 ---------------------------------------------------------------------------------  ------------------------------------------------------------------------------- 
                                                Held at fair value                                                               Held at fair value 
                                  -----------------------------------------------                                  ----------------------------------------------- 
                                                                                              Held                                                                             Held 
                                                                                                at                                                                               at 
                                           Level            Level           Level        amortised                           Level           Level           Level        amortised 
                           Total            1(a)             2(b)            3(c)             cost          Total             1(a)            2(b)            3(c)            costs 
                            US$m            US$m             US$m            US$m             US$m           US$m             US$m            US$m            US$m             US$m 
                 ---------------  --------------  ---------------  --------------  ---------------  -------------  ---------------  --------------  --------------  --------------- 
Assets 
Cash and cash 
 equivalents(d)            6,775           2,725                -               -            4,050         12,807            4,138               -               -            8,669 
Investments in 
 equity shares 
 and funds(e)                222             147                -              75                -            117               64               -              53                - 
Other 
 investments, 
 including 
 loans(f)                  2,275           2,018                -             229               28          2,682            2,422               -             238               22 
Trade and other 
 financial 
 receivables(g)            2,765              18            1,306               -            1,441          2,762                1           1,163               -            1,598 
Forward, option 
 and embedded 
 derivatives 
 contracts, not 
 designated 
 as hedges(h)                 67               -               16              51                -            133                -              48              85                - 
Derivatives 
 related to net 
 debt(i)                       2               -                2               -                -            139                -             139               -                - 
---------------  ---------------  --------------  ---------------  --------------  ---------------  -------------  ---------------  --------------  --------------  --------------- 
 
Liabilities 
Trade and other 
 financial 
 payables(j)             (6,485)               -             (30)               -          (6,455)        (6,356)                -            (67)               -          (6,289) 
Forward, option 
 and embedded 
 derivatives 
 contracts, 
 designated 
 as hedges(h)              (189)               -                -           (189)                -          (125)                -               -           (125)                - 
Forward, option 
 and embedded 
 derivatives 
 contracts, not 
 designated 
 as hedges(h)               (92)               -             (57)            (35)                -          (253)                -           (179)            (74)                - 
Derivatives 
 related to net 
 debt(i)                   (692)               -            (692)               -                -          (240)                -           (240)               -                - 
---------------  ---------------  --------------  ---------------  --------------  ---------------  -------------  ---------------  --------------  --------------  --------------- 
 

10. Financial Instruments (continued)

(a) Valuation is based on unadjusted quoted prices in active markets for identical financial instruments.

(b) Valuation is based on inputs that are observable for the financial instruments, which include quoted prices for similar instruments or identical instruments in markets which are not considered to be active, or inputs, either directly or indirectly based on observable market data.

(c) Valuation is based on inputs that cannot be observed using market data (unobservable inputs). The change in valuation of our level 3 instruments for the year to 31 December 2022 is below:

 
                                                                     31 December                 31 December 
                                                                            2022                        2021 
--------------------------------------------  ----------------------------------  -------------------------- 
Level 3 financial assets and liabilities                                    US$m                        US$m 
--------------------------------------------  ----------------------------------  -------------------------- 
Opening balance                                                              177                         395 
Currency translation adjustments                                             (4)                         (6) 
Total realised gains/(losses) included 
 in: 
 
  *    consolidated sales revenue                                             16                          27 
 
  *    net operating costs                                                   365                        (50) 
Total unrealised gains included in: 
 
  *    net operating costs                                                   124                          68 
Total unrealised losses transferred into 
 other comprehensive income through cash 
 flow hedges                                                               (110)                       (212) 
Additions to financial assets/(liabilities)                                   41                        (21) 
Disposals/maturity of financial instruments                                (478)                         (6) 
Transfers                                                                      -                        (18) 
--------------------------------------------  ----------------------------------  -------------------------- 
Closing balance                                                              131                         177 
--------------------------------------------  ----------------------------------  -------------------------- 
Net gains included in the income statement 
 for assets and liabilities held at year 
 end                                                                         103                          20 
--------------------------------------------  ----------------------------------  -------------------------- 
 

(d) Our "cash and cash equivalents" of US$6,775 million (31 December 2021:US$12,807 million), includes US$2,725 million (31 December 2021:US$4,138 million) relating to money market funds which are treated as fair value through profit or loss (FVPL) under IFRS 9 with the fair value movements going into finance income.

(e) Investments in equity shares and funds include US$153 million (31 December 2021: US$98 million) of equity shares, not held for trading, where we have irrevocably elected to present fair value gains and losses on revaluation in other comprehensive income (FVOCI). The election is made at an individual investment level.

(f) Other investments, including loans, covers: cash deposits in rehabilitation funds, government bonds, managed investment funds and royalty receivables.

(g) Trade receivables include provisionally priced invoices. The related revenue is initially based on forward market selling prices for the quotation periods stipulated in the contracts with changes between the provisional price and the final price recorded separately within "Other revenue". The selling price can be measured reliably for the Group's products, as it operates in active and freely traded commodity markets. At 31 December 2022, US$1,234 million (31 December 2021: US$1,114 million) of provisionally priced receivables were recognised.

10. Financial Instruments (continued)

(h) Level 3 derivatives consist of derivatives embedded in electricity purchase contracts linked to the LME, midwest premium and billet premium with terms expiring between 2025 and 2036 (31 December 2021: 2025 and 2036).

   (i)   Net debt derivatives include interest rate swaps and cross-currency swaps. 

(j) Trade and other financial payables comprise trade payables, other financial payables, accruals and amounts due to equity accounted units.

There were no material transfers between level 1 and level 2, or between level 2 and level 3 in the period ended 31 December 2022 or in the year ended 31 December 2021.

Valuation techniques and inputs

The techniques used to value our more significant fair value assets/(liabilities) categorised under Level 2 and Level 3 are summarised below:

 
                                             Fair Value 
Description                                        US$m  Valuation technique  Significant Inputs 
Level 2 
Interest rate swaps                               (356)  Discounted cash      Applicable market 
                                                          flows                quoted swap yield 
                                                                               curves 
                                                                               Credit default spread 
--------------------------------  ---------------------  ------------------- 
Cross currency interest                           (334)  Discounted cash      Applicable market 
 rate swaps                                               flows                quoted swap yield 
                                                                               curves 
                                                                               Credit default spread 
                                                                               Market quoted FX 
                                                                               rate 
--------------------------------  ---------------------  ------------------- 
Provisionally priced receivables                  1,234  Closely related      Applicable forward 
                                                          listed product       quoted metal price 
--------------------------------  ---------------------  ------------------- 
 
Level 3 
Derivatives embedded in                           (208)  Option pricing       LME forward aluminium 
 electricity contracts                                    model                price 
                                                                               Midwest premium 
                                                                               and billet premium 
--------------------------------  ---------------------  ------------------- 
Royalty receivables                                 209  Discounted cash      Forward commodity 
                                                          flows                price 
                                                                               Mine production 
--------------------------------  ---------------------  ------------------- 
 

Sensitivity analysis in respect of level 3 financial instruments

For assets/(liabilities) classified under level 3, the effect of changing the significant unobservable inputs on carrying value has been calculated using a movement that we deem to be reasonably probable.

To value the long-term aluminium embedded power derivatives, we use unobservable inputs when the term of the derivative extends beyond observable market prices. Changing the level 3 inputs to reasonably possible alternative assumptions does not change the fair value significantly, taking into account the expected remaining term of contracts for either reported period. The fair value of these derivatives is a net liability of US$208 million at 31 December 2022 (31 December 2021: US$146 million).

10. Financial Instruments (continued)

Royalty receivables include amounts arising from our divested coal businesses with a carrying value of US$209 million (31 December 2021: US$136 million). These are classified as "Other investments, including loans" within "Other financial assets". The fair values are determined using level 3 unobservable inputs. These royalty receivables include US$81 million from forecast production beyond 2030. These have not been adjusted for potential changes in production rates that could occur due to climate change targets impacting the operator.

The main unobservable input is the long-term coal price used over the life of these royalty receivables. A 15% increase in the coal spot price would result in a US$68 million increase (31 December 2021: US$63 million increase) in the carrying value. A 15% decrease in the coal spot price would result in a US$18 million decrease (31 December 2021: US$53 million decrease) in the carrying value. We have used a 15% assumption to calculate our exposure as it represents the annual coal price movement that we deem to be reasonably probable (on an annual basis over the long run).

Fair values disclosure of financial instruments

The following table shows the carrying amounts and fair values of our borrowings including those which are not carried at an amount which approximates their fair value at 31 December 2022 and 31 December 2021. The fair values of our remaining financial instruments approximate their carrying values because of their short maturity, or because they carry floating rates of interest.

 
                                           31 December                 31 December 
                                               2022                        2021 
----------------------------------  --------------------------  -------------------------- 
                                        Carrying          Fair      Carrying          Fair 
                                           value         value         value         value 
                                            US$m          US$m          US$m          US$m 
----------------------------------  ------------  ------------  ------------  ------------ 
Borrowings (including overdrafts)         11,071        11,192        12,168        13,904 
----------------------------------  ------------  ------------  ------------  ------------ 
 

Total borrowings with a carrying value of US$6.6 billion (31 December 2021: US$7.3 billion) relate to listed bonds with a fair value of US$6.6 billion (31 December 2021: US$8.7 billion) and are categorised as level 1 in the fair value hierarchy. Borrowings with a carrying value of US$3.8 billion (31 December 2021: US$4.2 billion) relate to project finance drawn down by Oyu Tolgoi, with a fair value of US$3.9 billion (31 December 2021: US$4.4 billion) using a number of level 3 valuation inputs. Our remaining borrowings have a fair value measured by discounting estimated cash flows with an applicable market quoted yield, and are categorised as level 2 in the fair value hierarchy.

11. Commitments and contingencies

Contingent liabilities (subsidiaries, joint operations, joint ventures and associates)

Contingent liabilities, indemnities and other performance guarantees represent the potential outflow of funds from the Group for the satisfaction of obligations including those under contractual arrangements (for example undertakings related to supplier agreements) not provided for in the balance sheet, where the likelihood of the contingent liabilities, guarantees or indemnities being called is assessed as possible rather than probable or remote.

11. Commitments and contingencies (continued)

Contingent liabilities, indemnities and other performance guarantees were US$498 million at 31 December 2022 (31 December 2021: US$441 million).

There were no material contingent liabilities arising in relation to the Group's joint ventures and associates. We have not established provisions for certain additional legal claims in cases where we have assessed that a payment is either not probable or cannot be reliably estimated. A number of our companies are, and will likely continue to be, subject to various legal proceedings and investigations that arise from time to time. As a result, the Group may become subject to substantial liabilities that could affect our business, financial position and reputation. Litigation is inherently unpredictable and large judgments may at times occur. The Group may in the future incur judgments or enter into settlements of claims that could lead to material cash outflows. We do not believe that any of these proceedings will have a materially adverse effect on our financial position.

Contingent liabilities - not quantifiable

The current status of contingent liabilities where it is not practicable to provide a reliable estimate of possible financial exposure is:

Litigation disputes

 
Litigation matter           Latest update 
==========================  ======================================================= 
Timing of the impairment    In October 2017, Rio Tinto announced that it had 
 of Rio Tinto Coal           been notified by the U.S. Securities and Exchange 
 Mozambique (US securities   Commission (SEC) that the SEC had filed a complaint 
 and exchange commission)    in relation to Rio Tinto's disclosures and timing 
                             of the impairment of Rio Tinto Coal Mozambique 
                             (RTCM). The impairment was reflected in Rio Tinto's 
                             2012 year-end accounts. The SEC alleges that Rio 
                             Tinto, a former chief executive, Tom Albanese, 
                             and a former chief financial officer, Guy Elliott, 
                             committed violations of the antifraud, reporting, 
                             books and records, and internal control provisions 
                             of the federal securities law by not accurately 
                             disclosing the value of RTCM and not impairing 
                             it when Rio Tinto published its 2011 year-end accounts 
                             in February 2012 or its 2012 interim results in 
                             August 2012. In June 2019, the trial court dismissed 
                             an associated US class action on behalf of securities 
                             holders. In August 2020, the appeals court partially 
                             overturned the court's dismissal and the trial 
                             court dismissed the case again in 2022. The securities 
                             holders have appealed further to reinstate their 
                             claims, and the court has requested briefing in 
                             2023. No provision has been recognised for this 
                             case. 
2011 Contractual            Rio Tinto continues to co-operate fully with relevant 
 payments in Guinea          authorities in connection with their investigations 
                             in relation to contractual payments totalling US$10.5 
                             million made to a consultant who had provided advisory 
                             services in 2011 on the Simandou project in Guinea. 
                             In August 2018, the court dismissed a related US 
                             class action commenced on behalf of securities 
                             holders. No provision has been recognised for this 
                             case. 
==========================  ======================================================= 
 

11. Commitments and contingencies (continued)

At 31 December 2022, the outcomes of the matters remain uncertain, but they could ultimately expose the Group to material financial cost. We believe these cases are unwarranted and will defend the allegations vigorously. A dedicated Board committee continues to monitor the progress of these matters, as appropriate.

On 6 March 2022 we reached a settlement with ASIC regarding the disclosure of the impairment of Rio Tinto Coal Mozambique (RTCM), which was reflected in Rio Tinto's 2012 year-end accounts. This was previously disclosed as a contingent liability at 31 December 2021. As part of the court approved settlement, we paid a A$750,000 penalty for a single contravention of our continuous disclosure obligations in the period 21 December 2012 to 17 January 2013, immediately preceding the impairment announcement. As part of this court approved settlement between ASIC and Rio Tinto, there were no findings of fraud or any systemic or widespread failure by Rio Tinto. The case against Tom Albanese and Guy Elliott brought by ASIC has been wholly dismissed.

Other contingent liabilities

We are modernising agreements with Traditional Owner groups in response to the Juukan Gorge incident. We have created provisions, within "Other provisions", based on our best estimate of historical claims; however, the process is incomplete and it is possible that further claims could arise relating to past events.

Close-down and restoration provisions are not recognised for those operations that have no known restrictions on their lives as the date of closure cannot be reliably estimated. This applies primarily to our Canadian aluminium smelters, which are not dependent upon a specific orebody and have access to indefinite-lived power from owned hydro-power stations with water rights permitted by local governments. In these instances, a closure obligation may exist at the reporting date; however, due to the indefinite nature of asset lives it is not possible to arrive at a sufficiently reliable estimate for the purposes of recognising a provision. Close-down and restoration provisions are recognised at these operations for separately identifiable closure activities which can be reasonably estimated, such as the demolition and removal of fixed structures after a pre-determined period. Any contingent liability for these assets will crystallise into a closure provision if and when a decision is taken to cease operations.

Capital commitments at 31 December 2022

Capital commitments, excluding the Group's share of joint venture capital commitments, were US$3,354 million (31 December 2021: US$2,551 million). Our capital commitments include open purchase orders for managed operations and expenditure on major projects already authorised by our Investment Committee for non-managed operations. It does not include the estimated incremental capital expenditure relating to decarbonisation projects of US$7.5 billion between 2022 and 2030 unless otherwise contractually committed. On a legally enforceable basis, capital commitments would be approximately US$1.0 billion (2021: US$1.1 billion) as many of the contracts relating to the Group's projects have various cancellation clauses.

The Group's share of joint venture capital commitments was US$15 million at 31 December 2022 (31 December 2021: US$11 million).

12. Purchase of Turquoise Hill Resources Ltd

On 16 December 2022, we purchased the remaining 49% share of Turquoise Hill Resources Ltd. The Group now holds a 66% direct interest in Oyu Tolgoi LLC (OT). Up until December 2022 the Group had a 50.79% interest in Turquoise Hill Resources Ltd, which held a 66% interest in OT. The Group therefore had a 33.5% indirect interest in OT.

Summarised below is the financial information of Oyu Tolgoi on a 100% basis. It represents the amounts shown in the subsidiaries' financial statements prepared in accordance with IFRS under Group accounting policies, including fair value adjustments, and before intercompany eliminations.

 
                                                                 Oyu Tolgoi        Oyu Tolgoi 
                                                                       2022              2021 
Income statement summary for the year ended 31 December                US$m              US$m 
========================================================  =================  ================ 
Revenue                                                               1,424             1,971 
(Loss)/profit after tax                                               (224)               465 
- attributable to non-controlling interests                           (159)               285 
- attributable to Rio Tinto                                            (65)               180 
Total comprehensive (loss)/income                                     (224)               465 
========================================================  =================  ================ 
 
 
                                                      2022           2021 
Balance sheet summary as at 31 December               US$m           US$m 
Non-current assets                                  13,662         12,199 
Current assets                                         753            523 
Current liabilities                                (4,253)        (3,172) 
Non-current liabilities                           (10,731)        (9,874) 
============================================  ============  ============= 
Net assets                                           (569)          (324) 
- attributable to non-controlling interests          (210)           (89) 
- attributable to Rio Tinto                          (359)          (235) 
============================================  ============  ============= 
 
 
Cash flow statement summary for the year ended 31           2022          2021 
 December                                                   US$m          US$m 
Cash flow from operations                                    406           851 
 

Oyu Tolgoi: approval for commencement of underground operations

On 25 January 2022, Rio Tinto, Turquoise Hill Resources Ltd (Turquoise Hill) and the Government of Mongolia announced their agreement, and unanimous approval by the Board of Oyu Tolgoi, to commence the underground operations.

As part of a comprehensive project budget and funding package undertaken between the parties in reaching this agreement, Turquoise Hill agreed to waive in full, funding balances arising from a carry account loan with Erdenes Oyu Tolgoi (Erdenes) of US$2.4 billion. This comprised the amount of common share investments in Oyu Tolgoi LLC funded by Turquoise Hill on behalf of Erdenes to build the project to date, plus US$1.0 billion of accrued interest. The waiver took effect on 25 January 2022. Rio Tinto and Turquoise Hill also agreed a plan to deliver the funding required until sustainable underground production is reached.

12. Purchase of Turquoise Hill Resources Ltd (continued)

Prior to the waiver agreement, the funding balances owing from Erdenes to Turquoise Hill were expected to be repaid via a pledge over Erdenes' share of future Oyu Tolgoi common share dividends. For this reason, and because the arrangement was between Turquoise Hill and Erdenes rather than with Oyu Tolgoi LLC itself, both the principal and interest were treated as transactions with owners acting in their capacity as owners. Consequently, at 31 December 2021, related amounts were recorded as a reduction in the share of equity attributable to non-controlling interests, resulting in an increase to the effective interest in Oyu Tolgoi attributable to owners of Rio Tinto.

Funding balances owing from Erdenes to Turquoise Hill were not classified as loan receivables in the Group Balance Sheet, and there was no interest income shown in the Group Income Statement. Accumulation of interest on the funding balances increased the share of retained earnings attributable to Rio Tinto as it accrued.

Waiving the funding balances owing from Erdenes to Turquoise Hill increases Erdenes' economic share arising through entitlement to cash flows from future dividends of Oyu Tolgoi. In the 2022 Group results, there is no Income Statement charge for loan forgiveness or write-off as a result of the waiver, and net assets and liabilities for Oyu Tolgoi included in the Group Balance sheet remained unchanged as a result of this transaction. There was no exchange of cash or other financial assets between parties and there has been no change to the underlying free cash flows of the Oyu Tolgoi operations and development project. The waiver did not have an impact on the Group's assessment of impairment indicators for either 2021 or 2022, since it related to the project shareholders' funding arrangements rather than the economic capability of the Cash Generating Unit itself. A reallocation of the net asset value allocation between the owners of Oyu Tolgoi has been recorded in the Group Statement of Changes in Equity for 2022 by reducing equity attributable to owners of Rio Tinto and increasing equity attributable to non-controlling interests.

13. Events after the balance sheet date

On 16 February 2023, we re-financed the US$3.9 billion Oyu Tolgoi project finance facility with a syndicate of international financial institutions, export credit agencies and commercial lenders. The lenders have agreed to a deferral of the principal repayments by three years to June 2026 and to an extension of the final maturity date by five years from 2030 to 2035. The terms and conditions are broadly unchanged and lenders continue to benefit from the Debt Service Undertaking from Turquoise Hill Resources Limited and the Completion Support Undertaking from Rio Tinto plc.

There were no other significant events after the balance sheet date requiring disclosure.

Rio Tinto financial information by business unit

 
                                                   Segmental             Underlying            Depreciation            Underlying 
                                                   revenue(a)             EBITDA(a)          and amortisation          earnings(a) 
                                         Rio 
                                       Tinto 
                                    interest       2022       2021       2022       2021        2022        2021        2022       2021 
Year ended 31 December                     %       US$m       US$m       US$m       US$m        US$m        US$m        US$m       US$m 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Iron Ore 
Pilbara                                  (b)     29,313     39,111     18,474     27,837       2,011       2,003      11,075     17,544 
Dampier Salt                            68.4        352        298         56         39          19          20          19         10 
Evaluation 
 projects/other                          (c)      2,711      2,147         33       (81)           -           -          53       (79) 
Intra-segment                            (c)    (1,470)    (1,974)         49      (203)           -           -          35      (152) 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Total Iron Ore Segment                           30,906     39,582     18,612     27,592       2,030       2,023      11,182     17,323 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
 
Aluminium 
Bauxite                                           2,396      2,203        618        619         361         328          83        174 
Alumina                                           3,215      2,743        289        569         200         165          17        306 
Primary Metal                                     7,561      6,706      2,426      2,592         704         694       1,266      1,454 
Pacific Aluminium                                 3,102      2,947        497        693         135         103         248        426 
Intra-segment and other                         (3,138)    (2,718)         12         14           -         (1)         (8)        192 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Integrated operations                            13,136     11,881      3,842      4,487       1,400       1,289       1,606      2,552 
Other product group 
 items                                              973        814         25         26           -           -          15         17 
========================  ==================  =========  =========  =========  =========  ----------  ----------  ==========  ========= 
Product group operations                         14,109     12,695      3,867      4,513       1,400       1,289       1,621      2,569 
                                                                                          ----------  ---------- 
Evaluation 
 projects/other                                       -          -      (195)      (131)           -           -       (149)      (101) 
========================  ==================  =========  =========  =========  =========  ----------  ----------  ==========  ========= 
Total Aluminium Segment                          14,109     12,695      3,672      4,382       1,400       1,289       1,472      2,468 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
 
Copper 
Kennecott                              100.0      1,923      2,528        857      1,142         624         538         (9)        513 
Escondida                               30.0      2,628      2,935      1,641      2,013         330         348         798      1,003 
Oyu Tolgoi and Turquoise 
 Hill                                    (d)      1,424      1,971        449      1,213         194         213         130        325 
Product group operations                          5,975      7,434      2,947      4,368       1,148       1,099         919      1,841 
Simandou iron ore 
 project                                 (e)          -          -      (189)       (58)           -           -       (145)       (43) 
Evaluation 
 projects/other                                     724        393      (382)      (341)           5           4       (253)      (219) 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Total Copper Segment                              6,699      7,827      2,376      3,969       1,153       1,103         521      1,579 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
 
Minerals 
Iron Ore Company of 
 Canada                                 58.7      2,818      3,526      1,381      2,026         207         197         475        734 
Rio Tinto Iron & 
 Titanium                                (f)      2,366      1,791        799        470         224         213         369        176 
Rio Tinto Borates                      100.0        742        592        155         89          54          51          80         32 
Diamonds                                 (g)        816        501        330        180          45          12         151         99 
------------------------  ------------------  ---------  ---------  ---------  ---------  ----------  ----------  ----------  --------- 
Product group operations                          6,742      6,410      2,665      2,765         530         473       1,075      1,041 
Evaluation 
 projects/other                                      12         71      (246)      (162)           1           1       (226)      (153) 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Total Minerals Segment                            6,754      6,481      2,419      2,603         531         474         849        888 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
 
Reportable segments 
 total                                           58,468     66,585     27,079     38,546       5,114       4,889      14,024     22,258 
------------------------  ------------------  ---------  ---------  ---------  ---------  ----------  ----------  ----------  --------- 
Other operations                         (h)        192        251       (16)       (28)         272         199       (340)       (84) 
Inter-segment 
 transactions                                     (256)      (268)         24         42                                  26         19 
Central pension costs, 
 share-based 
 payments, insurance and 
 derivatives                                                              377        110                                 374        133 
Restructuring, project 
 and 
 one-off costs                                                          (173)       (80)                                (87)       (51) 
Central costs                                                           (766)      (613)          94         106       (651)      (585) 
Central exploration and 
 evaluation                                                             (253)      (257)                               (209)      (215) 
Net interest                                                                                                             138       (95) 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Underlying 
 EBITDA/earnings                                                       26,272     37,720                              13,275     21,380 
Items excluded from 
 underlying 
 EBITDA/earnings                                                          269      (811)                               (855)      (286) 
Reconciliation to Group 
income 
statement 
Share of equity 
 accounted 
 unit sales and 
 intra-subsidiary/equity 
 accounted unit sales                           (2,850)    (3,073) 
Impairment charges net 
 of 
 reversals                                                               (52)      (269) 
Depreciation and 
 amortisation 
 in subsidiaries 
 excluding 
 capitalised 
 depreciation                                                         (4,871)    (4,525) 
Depreciation and 
 amortisation 
 in equity accounted 
 units                                                                  (470)      (497)       (470)       (497) 
Taxation and finance 
 items 
 in equity accounted 
 units                                                                  (640)      (759) 
Finance items                                                         (1,846)       (26) 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
Consolidated sales 
 revenue/profit 
 before 
 taxation/depreciation 
 and amortisation/net 
 earnings                                        55,554     63,495     18,662     30,833       5,010       4,697      12,420     21,094 
========================  ==================  =========  =========  =========  =========  ==========  ==========  ==========  ========= 
 

Rio Tinto financial information by business unit (continued)

 
                                                      Capital expenditure(i) 
                                                           for the year                                         Operating assets(j) 
                                                         ended 31 December                                              as at 
                                Rio 
                              Tinto                                                  Adjusted                 31 December                 31 December 
                           interest                         2022                         2021                        2022                        2021 
                                  %                         US$m                         US$m                        US$m                        US$m 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
Iron Ore 
Pilbara                         (b)                        2,906                        3,928                      17,510                      16,850 
Dampier Salt                   68.4                           34                           19                         153                         159 
Evaluation 
 projects/other                 (c)                            -                            -                         835                       1,283 
Intra-segment                   (c)                            -                            -                       (220)                       (255) 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
Total Iron Ore 
 Segment                                                   2,940                        3,947                      18,278                      18,037 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
 
Aluminium 
Bauxite                                                      161                          155                       2,395                       2,542 
Alumina                                                      356                          362                       2,372                       2,258 
Primary Metal                                                752                          690                       9,343                       9,734 
Pacific 
 Aluminium                                                   108                           93                         155                         228 
Intra-segment 
 and other                                                     -                            -                         629                         839 
Total Aluminium 
 Segment                                                   1,377                        1,300                      14,894                      15,601 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
 
Copper 
Kennecott                     100.0                          563                          411                       2,006                       2,404 
Escondida                      30.0                            -                            -                       2,792                       2,515 
Oyu Tolgoi and 
 Turquoise 
 Hill                           (d)                        1,056                          911                      13,477                       8,998 
Product group 
 operations                                                1,619                        1,322                      18,275                      13,917 
Simandou iron 
 ore project                    (e)                            -                            -                        (22)                          13 
Evaluation 
 projects/other                                                3                            6                         165                         210 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
Total Copper 
 Segment                                                   1,622                        1,328                      18,418                      14,140 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
 
Minerals 
Iron Ore 
 Company of 
 Canada                        58.7                          366                          377                       1,146                       1,077 
Rio Tinto Iron 
 & Titanium                     (f)                          217                          184                       3,348                       3,369 
Rio Tinto 
 Borates                      100.0                           34                           43                         496                         487 
Diamonds                        (g)                           48                           25                       (106)                        (19) 
---------------  ------------------  ---------------------------  ---------------------------  --------------------------  -------------------------- 
Product group 
 operations                                                  665                          629                       4,884                       4,914 
Evaluation 
 projects/other                                               14                           15                         874                          43 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
Total Minerals 
 Segment                                                     679                          644                       5,758                       4,957 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
 
Reportable 
 segments total                                            6,618                        7,219                      57,348                      52,735 
---------------  ------------------  ---------------------------  ---------------------------  --------------------------  -------------------------- 
Other 
 operations                     (h)                           53                         (13)                     (1,883)                     (1,533) 
Inter-segment 
 transactions                                                                                                          12                        (12) 
Other items                                                   79                          117                     (1,114)                     (1,334) 
Total                                                      6,750                        7,323                      54,363                      49,856 
---------------  ------------------  ---------------------------  ---------------------------  --------------------------  -------------------------- 
Add back: 
 Proceeds from 
 disposal of 
 property, 
 plant and 
 equipment                                                     -                           61 
---------------  ------------------  ---------------------------  ---------------------------  --------------------------  -------------------------- 
Total purchases 
 of property, 
 plant & 
 equipment and 
 intangibles as 
 per cash 
 flow statement                                            6,750                        7,384 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
Add: Net 
 (debt)/cash                                                                                                      (4,188)                       1,576 
Equity 
 attributable 
 to 
 owners of Rio 
 Tinto                                                                                                             50,175                      51,432 
===============  ==================  ===========================  ===========================  ==========================  ========================== 
 

Notes to financial information by business unit

Business units are classified according to the Group's management structure.

(a) Segmental revenue, Underlying EBITDA and Capital expenditure are defined and calculated in note 3 from pages 45 to 49 . Underlying Earnings is defined and calculated within the Alternative performance measures section on pages 69 to 78 .

(b) Pilbara represents the Group's 100% holding in Hamersley, 50% holding in Hope Downs Joint Venture and 65% holding in Robe River Iron Associates. The Group's net beneficial interest in Robe River Iron Associates is 53%, as 30% is held through a 60% owned subsidiary and 35% is held through a 100% owned subsidiary.

(c) Segmental revenue, Underlying EBITDA, Underlying earnings and Operating assets within Evaluation projects/other include activities relating to the shipment and blending of Pilbara and Iron Ore Company of Canada (IOC) iron ore inventories held at portside in China and sold to domestic customers. Transactions between Pilbara and our portside trading business are eliminated through the Iron Ore "intra-segment" line and transactions between IOC and the portside trading business are eliminated through "inter-segment transactions".

(d) Until 16 December 2022, our interest in Oyu Tolgoi was held indirectly through our 50.8% investment in Turquoise Hill Resources Ltd (TRQ), where TRQ's principal asset was its 66% investment in Oyu Tolgoi LLC, which owned the Oyu Tolgoi copper-gold mine. Following the purchase of TRQ we now directly hold a 66% investment in Oyu Tolgoi LLC.

(e) Simfer Jersey Limited, a company incorporated in Jersey, in which the Group has a 53% interest, has an 85% interest in Simfer S.A., the company that manages the Simandou project in Guinea. The Group therefore has a 45.05% indirect interest in Simfer S.A. These entities are consolidated as subsidiaries and together referred to as the Simandou iron ore project.

(f) Includes our interests in Rio Tinto Iron and Titanium Quebec Operations (100%), QIT Madagascar Minerals (QMM, 80%) and Richards Bay Minerals (attributable interest of 74%).

(g) Includes our interests in Argyle (100%) residual operations which relates to the sale of remaining inventory and Diavik. Until 18 November 2021 we recognised our 60% share of assets, revenue and expenses relating to the Diavik joint venture. Liabilities were recognised according to Diavik Diamond Mine Inc's contractual obligations at 100%, with a corresponding 40% receivable or contingent asset representing the co-owner's share where applicable. Post acquisition, we now consolidate (100%) of the Diavik Diamond Mine. From 1 June 2021, management responsibility for rehabilitation of the Argyle site moved from Minerals to Rio Tinto Closure (RTC), hence the Argyle closure is reported in Other operations effective from 1 January 2021. Refer to (h).

(h) Other operations include our 100% interest in the Gove alumina refinery (under rehabilitation), Rio Tinto Marine, and the remaining legacy liabilities of Rio Tinto Coal Australia. These include provisions for onerous contracts, in relation to rail infrastructure capacity, partly offset by financial assets and receivables relating to contingent royalties and disposal proceeds. From 16 June 2022, Commercial Treasury and related central costs are reported as part of 'Other operations' instead of 'Other items' in previous periods. We have not restated prior year balances as the impact was not significant. From 1 January 2021, Uranium moved from Minerals to Other operations and Argyle closure has been included in Other operations.

Notes to financial information by business unit (continued)

(i) Capital expenditure is the net cash outflow on purchases less sales of property, plant and equipment, capitalised evaluation costs and purchases less sales of other intangible assets as derived from the Group cash flow statement. The details provided include 100% of subsidiaries' capital expenditure and Rio Tinto's share of the capital expenditure of joint operations but exclude equity accounted units. We have adjusted the comparatives for this change in definition.

(j) Operating assets of the Group represents equity attributable to Rio Tinto adjusted for net (debt)/cash. Operating assets of subsidiaries, joint operations and the Group's share relating to equity accounted units are made up of net assets adjusted for net (debt)/cash and post-retirement assets and liabilities, net of tax. Operating assets are stated after the deduction of non-controlling interests; these are calculated by reference to the net assets of the relevant companies (i.e. inclusive of such companies' debt and amounts due to or from Rio Tinto Group companies).

(j)

Alternative performance measures

The Group presents certain alternative performance measures (APMs) which are reconciled to directly comparable IFRS financial measures below. These APMs are used by management to assess the performance of the business and provide additional information, which investors may find useful. APMs are presented in order to give further insight into the underlying business performance of the Group's operations.

APMs are not consistently defined and calculated by all companies, including those in the Group's industry. Accordingly, these measures used by the Group may not be comparable with similarly titled measures and disclosures made by other companies. Consequently, these APMs should not be regarded as a substitute for the IFRS measures and should be considered supplementary to those measures.

The following tables present the Group's key financial measures not defined according to IFRS and a reconciliation between those APMs and their nearest respective IFRS measures.

APMs derived from the income statement

The following income statement measures are used by the Group to provide greater understanding of the underlying business performance of its operations and to enhance comparability of reporting periods. They indicate the underlying commercial and operating performance of our assets including revenue generation, productivity and cost management.

Segmental revenue

Segmental revenue includes consolidated sales revenue plus the equivalent sales revenue of equity accounted units in proportion to our equity interest (after adjusting for sales to/from subsidiaries). The reconciliation can be found in Note 3.

Underlying EBITDA

Underlying EBITDA represents profit before tax, net finance items, depreciation and amortisation adjusted to exclude the EBITDA impact of items that do not reflect the underlying performance of our reportable segments. The reconciliation of profit after tax to underlying EBITDA can be found in the segmental information note on page 47 .

Alternative performance measures (continued)

Underlying EBITDA margin

Underlying EBITDA margin is defined as Group underlying EBITDA divided by the aggregate of consolidated sales revenue and our share of equity account unit sales after eliminations.

 
 
                                                                        2022       2021 
                                                                        US$m       US$m 
-----------------------------------------------------------------  ---------  --------- 
Underlying EBITDA                                                     26,272     37,720 
Consolidated sales revenue                                            55,554     63,495 
Share of equity accounted unit sales and inter-subsidiary/equity 
 accounted unit sales eliminations                                     2,850      3,073 
-----------------------------------------------------------------  ---------  --------- 
                                                                      58,404     66,568 
-----------------------------------------------------------------  ---------  --------- 
Underlying EBITDA margin                                                45 %       57 % 
-----------------------------------------------------------------  ---------  --------- 
 

Pilbara underlying FOB EBITDA margin

The Pilbara underlying free on board (FOB) EBITDA margin is defined as Pilbara underlying EBITDA divided by Pilbara segmental revenue, excluding freight revenue.

 
 
                                                    2022       2021 
                                                    US$m       US$m 
---------------------------------------------  ---------  --------- 
Pilbara 
Underlying EBITDA                                 18,474     27,837 
---------------------------------------------  ---------  --------- 
Pilbara segmental revenue                         29,313     39,111 
Less: Freight revenue                            (2,206)    (2,707) 
---------------------------------------------  ---------  --------- 
Pilbara segmental revenue, excluding freight 
 revenue                                          27,107     36,404 
---------------------------------------------  ---------  --------- 
Pilbara underlying FOB EBITDA margin                68 %       76 % 
---------------------------------------------  ---------  --------- 
 

Underlying EBITDA margin from Aluminium integrated operations

Underlying EBITDA margin from integrated operations is defined as underlying EBITDA divided by segmental revenue.

 
 
                                                           2022       2021 
                                                           US$m       US$m 
----------------------------------------------------  ---------  --------- 
Aluminium 
Underlying EBITDA - integrated operations                 3,842      4,487 
----------------------------------------------------  ---------  --------- 
Segmental revenue - integrated operations                13,136     11,881 
----------------------------------------------------  ---------  --------- 
Underlying EBITDA margin from integrated operations        29 %       38 % 
----------------------------------------------------  ---------  --------- 
 

Alternative performance measures (continued)

Underlying EBITDA margin (product group operations)

Underlying EBITDA margin (product group operations) is defined as underlying EBITDA divided by segmental revenue.

 
 
                                                           2022       2021 
                                                           US$m       US$m 
----------------------------------------------------  ---------  --------- 
Copper 
Underlying EBITDA - product group operations              2,947      4,368 
----------------------------------------------------  ---------  --------- 
Segmental revenue - product group operations              5,975      7,434 
----------------------------------------------------  ---------  --------- 
Underlying EBITDA margin - product group operations        49 %       59 % 
----------------------------------------------------  ---------  --------- 
 
 
 
                                                           2022       2021 
                                                           US$m       US$m 
----------------------------------------------------  ---------  --------- 
Minerals 
Underlying EBITDA - product group operations              2,665      2,765 
----------------------------------------------------  ---------  --------- 
Segmental revenue - product group operations              6,742      6,410 
----------------------------------------------------  ---------  --------- 
Underlying EBITDA margin - product group operations        40 %       43 % 
----------------------------------------------------  ---------  --------- 
 

Underlying earnings

Underlying earnings represents net earnings attributable to the owners of Rio Tinto, adjusted to exclude items that do not reflect the underlying performance of the Group's operations.

Exclusions from underlying earnings are those gains and losses that, individually or in aggregate with similar items, are of a nature and size to require exclusion in order to provide additional insight into underlying business performance.

The following items are excluded from net earnings in arriving at underlying earnings in each year irrespective of materiality:

   -          Net gains/(losses) on disposal of interests in subsidiaries. 
   -          Impairment charges and reversals. 
   -          Profit/(loss) after tax from discontinued operations. 

- Exchange and derivative gains and losses. This exclusion includes exchange gains/(losses) on external net debt and intragroup balances, unrealised gains/(losses) on currency and interest rate derivatives not qualifying for hedge accounting, unrealised gains/(losses) on certain commodity derivatives not qualifying for hedge accounting, and unrealised gains/(losses) on embedded derivatives not qualifying for hedge accounting.

- Adjustments to closure provisions where the adjustment is associated to an impairment charge, for legacy sites where the disturbance or environmental contamination relates to the pre-acquisition period.

Alternative performance measures (continued)

In addition, there is a final judgmental category which includes, where applicable, other credits and charges that, individually or in aggregate if of a similar type, are of a nature or size to require exclusion in order to provide additional insight into underlying business performance.

Exclusions from underlying earnings relating to equity accounted units are stated after tax and included in the column "Pre-tax".

Reconciliation of underlying earnings to net earnings

 
                                                                       Non-controlling             Net 
                                          Pre-tax         Taxation           interests          amount      Net amount 
                                             2022             2022                2022            2022            2021 
                                             US$m             US$m                US$m            US$m            US$m 
---------------------------------  ==============  ===============  ==================  ==============  ============== 
Underlying earnings                        18,613          (4,684)               (654)          13,275          21,380 
=================================  ==============  ===============  ==================  ==============  ============== 
Items excluded from underlying 
 earnings 
Impairment charges net of 
 reversals(a)                                (52)                -                   -            (52)           (197) 
Loss on disposal of interest in 
 subsidiary(b)                              (105)                -                   -           (105)               - 
Foreign exchange and derivative 
 (losses)/gains: 
 - Foreign exchange gains on 
  external 
  net debt, intragroup balances 
  and 
  derivatives(c)                              244             (25)                 (3)             216             726 
 - Losses on currency and 
  interest 
  rate derivatives not qualifying 
  for hedge accounting(d)                   (435)               60                   2           (373)           (127) 
 - Gains/(losses) on embedded 
  commodity 
  derivatives not qualifying for 
  hedge 
  accounting(e)                                29              (8)                 (1)              20            (53) 
Gain recognised by Kitimat 
 relating 
 to LNG Canada's project(f)                   116             (10)                   -             106             336 
Change in closure estimates 
 (non-operating 
 and fully impaired sites)(g)               (180)                2                   -           (178)           (971) 
Gain on sale of the Cortez 
 Royalty(h)                                   432            (101)                   -             331               - 
Write-off of Federal deferred tax 
 assets in the United States(i)                 -            (820)                   -           (820)               - 
Total excluded from underlying 
 earnings                                      49            (902)                 (2)           (855)           (286) 
=================================  ==============  ===============  ==================  ==============  ============== 
Net earnings                               18,662          (5,586)               (656)          12,420          21,094 
=================================  ==============  ===============  ==================  ==============  ============== 
 

(a) Refer to Note 5

(b) Relates to the recycling of currency translation reserve on sale of the Roughrider deposit, refer to Note 5.

(c) Exchange gains on external net debt and intragroup balances included post-tax foreign exchange losses on net debt of US$262 million offset by post-tax gains of US$478 million on intragroup balances, primarily as a result of the Australian dollar weakening against the US dollar. In 2021, exchange gains on external net debt and intragroup balances included post-tax foreign exchange gains on intragroup balances of US$913 million partially offset by post-tax losses of US$187 million on external net debt/cash, primarily as a result of a weakening Australian dollar against the US dollar during the year.

Alternative performance measures (continued)

(d) Valuation changes on currency and interest rate derivatives, which are ineligible for hedge accounting, other than those embedded in commercial contracts, and the currency revaluation of embedded US dollar derivatives contained in contracts held by entities whose functional currency is not the US dollar.

(e) Valuation changes on derivatives, embedded in commercial contracts, that are ineligible for hedge accounting, but for which there will be an offsetting change in future Group earnings. Mark-to-market movements on commodity derivatives entered into with the commercial objective of achieving spot pricing for the underlying transaction at the date of settlement are included in underlying earnings.

(f) During the first half of 2022, LNG Canada elected to terminate their option to purchase additional land and facilities for expansion of their operations at Kitimat, Canada. The resulted gain has been excluded from underlying earnings consistent with prior years as it is part of a series of transactions that together were material. On 3 December 2021 we gained control over a new wharf at Kitimat, Canada that was built and paid for by LNG Canada. The gain on recognition was excluded from underlying earnings on the grounds of individual magnitude and consistency with the associated impairment charge, refer to note 5.

(g) In 2022 the charge relates to inflationary increases to the closure provision for non-operating and fully impaired sites in excess of the unwind of the discount. On 2 February 2022, Energy Resources of Australia released preliminary findings from its reforecast of the total undiscounted cost schedule for the Ranger rehabilitation project. Information available from this study resulted in the Group recording an increase to the closure provision of US$510 million at 31 December 2021. Other increases to closure estimates charged to the income statement in 2021 related to Diavik, Gove refinery, and a number of the Group's legacy sites where the environmental damage preceded ownership by Rio Tinto. The adjustments at Energy Resources Australia and Gove refinery were recognised in the income statement as these are non-operating sites, and excluded from underlying earnings due to the magnitude of the individual updates and materiality when aggregated.

(h) On 2 August 2022, we completed the sale of a gross production royalty which was retained following the disposal of the Cortez Complex in 2008. The gain recognised on sale of the royalty has been excluded from underlying earnings on the grounds of individual magnitude.

(i) In 2022 we wrote off US$0.8 billion of our deferred tax assets in the United States following the introduction of the Corporate Alternative Minimum Tax legislation, refer to Note 6.

(i)

Alternative performance measures (continued)

Basic underlying earnings per share

Basic underlying earnings per share is calculated as underlying earnings divided by the weighted average number of shares outstanding during the year.

 
 
Year ended 31 December                            2022     2021 
---------------------------------------------  -------  ------- 
Net earnings (US$ million)                      12,420   21,094 
Weighted average number of shares (millions)   1,619.8  1,618.4 
---------------------------------------------  -------  ------- 
Basic earnings per ordinary share (cents)        766.8  1,303.4 
Items excluded from underlying earnings per 
 share (cents)(a)                                 52.8     17.7 
---------------------------------------------  -------  ------- 
Basic underlying earnings per ordinary share 
 (cents)                                         819.6  1,321.1 
---------------------------------------------  -------  ------- 
 
 
(a) Calculation of items excluded from underlying 
 earnings per share                                    2022     2021 
Income excluded from underlying earnings (refer 
 to page 72 )                                           855      286 
Weighted average number of shares (millions)        1,619.8  1,618.4 
--------------------------------------------------  -------  ------- 
Items excluded from underlying earnings per 
 share (cents)                                         52.8     17.7 
--------------------------------------------------  -------  ------- 
 

We have provided basic underlying earnings per share as this allows the comparability of underlying financial performance adjusted to exclude items, that do not reflect the underlying performance of the Group's operations.

Interest cover

Interest cover is a financial metric used when managing our risk. It represents the number of times finance income and finance costs (including amounts capitalised) are covered by profit before taxation before finance income, finance costs, share of profit after tax of equity accounted units and items excluded from underlying earnings, plus dividends from equity accounted units.

 
 
                                                                            2022                           2021 
Year ended 31 December                                                      US$m                           US$m 
-------------------------------------------------  -----------------------------  ----------------------------- 
Profit before taxation                                                    18,662                         30,833 
Add back 
  Finance income                                                           (179)                           (64) 
  Finance costs                                                              335                            243 
  Share of profit after tax of equity accounted 
   units                                                                   (777)                        (1,042) 
  Items excluded from underlying earnings                                   (49)                            508 
Add: Dividends from equity accounted units                                   879                          1,431 
-------------------------------------------------  -----------------------------  ----------------------------- 
Calculated earnings                                                       18,871                         31,909 
 
Finance income                                                               179                             64 
Finance costs                                                              (335)                          (243) 
Add: Amounts capitalised                                                   (416)                          (358) 
-------------------------------------------------  -----------------------------  ----------------------------- 
Total finance income/costs before capitalisation                           (572)                          (537) 
 
Interest cover                                                                33                             59 
-------------------------------------------------  -----------------------------  ----------------------------- 
 

Alternative performance measures (continued)

Payout ratio

The payout ratio is used by us to guide the dividend policy we implemented in 2016, under which we have sought to return 40-60% of underlying earnings, on average through the cycle to shareholders as dividends. It is calculated as total equity dividends per share to owners of Rio Tinto declared in respect of the financial year divided by underlying earnings per share (as defined above). Dividends declared usually include an interim dividend paid in the year, and a final dividend paid after the end of the year. Any special dividends declared in respect of the financial year are also included.

 
 
                                                       2022       2021 
 For year ended 31 December                         (cents)    (cents) 
-----------------------------------------------  ----------  --------- 
Interim dividend declared per share                   267.0      376.0 
Interim special dividend declared per share               -      185.0 
Final dividend declared per share                     225.0      417.0 
Final special dividend declared per share                 -       62.0 
-----------------------------------------------  ----------  --------- 
Total dividend declared per share for the year        492.0    1,040.0 
 
Underlying earnings per share                         819.6    1,321.1 
-----------------------------------------------  ----------  --------- 
 
Payout ratio                                           60 %       79 % 
===============================================  ==========  --------- 
 

APMs derived from cash flow statement

Capital expenditure

Capital expenditure includes the net sustaining and development expenditure on property, plant and equipment and on intangible assets. This is equivalent to "Purchases of property, plant and equipment and intangible assets" in the cash flow statement less "Sales of property, plant and equipment and intangible assets".

This measure is used to support management's objective of effective and efficient capital allocation as we need to invest in existing assets in order to maintain and improve productive capacity, and in new assets to grow the business.

Rio Tinto share of capital investment

Rio Tinto's share of capital investment represents the Group's economic investment in capital projects. It has been newly introduced during the year to better represent the Group's share of funding for capital projects which are jointly funded with other shareholders, and which may differ from the consolidated basis included in the Capital expenditure APM. This better reflects the Group's approach to capital allocation.

Alternative performance measures (continued)

The measure is based upon the Capital expenditure APM, adjusted to deduct equity or shareholder loan financing provided to partially owned subsidiaries by non-controlling interests in respect of major capital projects in the period. Where funding which would otherwise be provided directly by shareholders is replaced with project financing, an adjustment is also made to deduct the share of project financing attributable to the non-controlling interest.This adjustment is not made in cases where Rio Tinto has unilaterally guaranteed this project financing. Lastly, funding contributed by the Group to Equity Accounted Units for its share of investment in their major capital projects is added to the measure. No adjustment is made to the Capital expenditure APM where capital expenditure is funded from the operating cash flows of the subsidiary or Equity Accounted Unit.

In the current and prior years the Capital expenditure APM and Rio Tinto share of capital investment are identical. However, the capital guidance on page 6 has been provided on this new basis and a reconciliation of the measure will be published in future periods when the two measures differ.

Free cash flow

Free cash flow is defined as net cash generated from operating activities minus purchases of property, plant and equipment and intangibles and payments of lease principal, plus proceeds from the sale of property, plant and equipment and intangible assets.

This measures the net cash returned by the business after the expenditure of sustaining and development capital. This cash can be used for shareholder returns, reducing debt and other investing/financing activities.

 
 
                                                     2022     2021 
Year ended 31 December                               US$m     US$m 
------------------------------------------------  -------  ------- 
Net cash generated from operating activities       16,134   25,345 
Less: Purchase of property, plant and equipment 
 and intangible assets                            (6,750)  (7,384) 
Less: Lease principal payments                      (374)    (358) 
Add: Sales of property, plant and equipment 
 and intangible assets                                  -       61 
------------------------------------------------  -------  ------- 
Free cash flow                                      9,010   17,664 
------------------------------------------------  -------  ------- 
 

Alternative performance measures (continued)

APMs derived from the balance sheet

Consolidated net (debt)/cash

Net (debt)/cash is total borrowings plus lease liabilities less cash and cash equivalents and other liquid investments, adjusted for derivatives related to net (debt)/cash.

Net (debt)/cash measures how we are managing our balance sheet and capital structure.

 
                                      Financing liabilities                                           Other assets 
-------------  -------------------------------------------------------------------  ------------------------------------------------ 
                                                                                                  Cash and 
                         Borrowings                                       Net debt        cash equivalents 
                          excluding                  Lease                 related               including 
Year ended 31         overdrafts(a)         liabilities(b)          derivatives(c)           overdrafts(a)      Other investments(d)    Net (debt)/cash 
December                       US$m                   US$m                    US$m                    US$m                      US$m               US$m 
-------------  --------------------  ---------------------  ----------------------  ----------------------  ------------------------  ----------------- 
Analysis of 
changes 
in 
consolidated 
net 
(debt)/cash 
Opening 
 balance                   (12,166)                (1,363)                   (101)                  12,805                     2,401              1,576 
Foreign 
 exchange 
 adjustment                     118                     69                    (92)                      15                         -                110 
Cash 
 movements 
 excluding 
 exchange 
 movements                      470                    374                     (3)                 (6,046)                     (352)            (5,557) 
Other 
 non-cash 
 movements                      508                  (280)                   (494)                       -                      (51)              (317) 
-------------  --------------------  ---------------------  ----------------------  ----------------------  ------------------------  ----------------- 
Closing 
 balance                   (11,070)                (1,200)                   (690)                   6,774                     1,998            (4,188) 
-------------  --------------------  ---------------------  ----------------------  ----------------------  ------------------------  ----------------- 
 

(a) Borrowings excluding overdrafts, of US$11,070 million (2021:US$12,166 million) differs from Borrowings on the balance sheet as it excludes bank overdrafts of US$1 million (2021: US$2 million) which has been included in cash and cash equivalents for the net (debt)/cash reconciliation.

(b) Other non-cash movements in lease liabilities include the net impact of additions, modifications and terminations during the year.

(c) Included within "Net (debt)/cash-related derivatives" are interest rate and cross currency interest rate swaps that are in hedge relationships with the Group's debt.

(d) Other investments includes US$1,998 million (2021: US$2,401 million) of highly liquid financial assets held in managed investment funds classified as held for trading.

Alternative performance measures (continued)

Net gearing ratio

Net gearing ratio is defined as net (debt)/cash divided by the sum of net (debt)/cash and total equity at the end of each year. It demonstrates the degree to which the Group's operations are funded by debt versus equity.

 
                                    31 December          31 December 
                                           2022                 2021 
                                           US$m                 US$m 
----------------------------------  -----------  ------------------- 
Net (debt)/cash                         (4,188)                1,576 
----------------------------------  -----------  ------------------- 
 
Net (debt)/cash                         (4,188)                1,576 
Total equity                           (52,274)             (56,590) 
----------------------------------  -----------  ------------------- 
Net (debt)/cash plus total equity      (56,462)             (55,014) 
----------------------------------  -----------  ------------------- 
Net gearing ratio                            7%                 (3%) 
----------------------------------  -----------  ------------------- 
 

Underlying return on capital employed

Underlying return on capital employed ("ROCE") is defined as underlying earnings excluding net interest divided by average capital employed (operating assets).

Underlying ROCE measures how efficiently we generate profits from investment in our portfolio of assets.

 
                                                     2022      2021 
                                                     US$m      US$m 
-----------------------------------------------  --------  -------- 
Profit after tax attributable to owners of Rio 
 Tinto (net earnings)                              12,420    21,094 
Items added back to derive underlying earnings 
 (refer to page 72 )                                  855       286 
-----------------------------------------------  --------  -------- 
Underlying earnings                                13,275    21,380 
Add/(deduct): 
Finance income per the income statement             (179)      (64) 
Finance costs per the income statement                335       243 
Tax on finance cost                                 (238)      (52) 
Non-controlling interest share of net finance 
 costs                                               (98)      (64) 
Net interest cost in equity accounted units 
 (Rio Tinto share)                                     42        32 
-----------------------------------------------  --------  -------- 
Net interest                                        (138)        95 
-----------------------------------------------  --------  -------- 
Adjusted underlying earnings                       13,137    21,475 
 
Equity attributable to owners of Rio Tinto - 
 beginning of the year                             51,432    47,054 
Net (cash)/debt - beginning of the year           (1,576)       664 
-----------------------------------------------  --------  -------- 
Operating assets - beginning of the year           49,856    47,718 
-----------------------------------------------  --------  -------- 
Equity attributable to owners of Rio Tinto - 
 end of the year                                   50,175    51,432 
Net debt/(cash) - end of the year                   4,188   (1,576) 
-----------------------------------------------  --------  -------- 
Operating assets - end of the year                 54,363    49,856 
-----------------------------------------------  --------  -------- 
Average operating assets                           52,110    48,787 
-----------------------------------------------  --------  -------- 
Underlying return on capital employed                25 %      44 % 
-----------------------------------------------  --------  -------- 
 

Metal prices and exchange rates

 
                                                                                   Increase/ 
                                                      2022                 2021   (Decrease) 
 
Metal prices - average for the 
 period 
Copper          - US cents/lb                          398                  422        (6) % 
Aluminium       - US$/tonne                          2,703                2,480          9 % 
                - US$/troy 
Gold             oz                                  1,800                1,799          0 % 
--------------  ------------------  ----------------------  -------------------  ----------- 
 
 
                                Full-year average                       Year-end 
                         -------------------------------  ------------------------------------ 
Exchange rates against                         Increase/                             Increase/ 
 the US dollar               2022      2021   (Decrease)        2022        2021    (Decrease) 
-----------------------  --------  --------  -----------  ----------  ----------  ------------ 
                                                    (10) 
Pound sterling               1.24      1.38            %        1.21        1.35        (10) % 
Australian dollar            0.69      0.75        (8) %        0.68        0.73         (7) % 
Canadian dollar              0.77      0.80        (4) %        0.74        0.78         (5) % 
                                                    (11) 
Euro                         1.05      1.18            %        1.07        1.13         (5) % 
                                                    (10) 
South African rand          0.061     0.068            %       0.059       0.063         (6) % 
-----------------------  --------  --------  -----------  ----------  ----------  ------------ 
 

Forward-looking statements

This report includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts included in this report, including, without limitation, those regarding Rio Tinto's financial position, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Rio Tinto's products, production forecasts and reserve and resource positions), are forward-looking statements. The words "intend", "aim", "project", "anticipate", "estimate", "plan", "believes", "expects", "may", "should", "will", "target", "set to" or similar expressions, commonly identify such forward-looking statements.

Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Rio Tinto, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such forward-looking statements are based on numerous assumptions regarding Rio Tinto's present and future business strategies and the environment in which Rio Tinto will operate in the future. Among the important factors that could cause Rio Tinto's actual results, performance or achievements to differ materially from those in the forward-looking statements include, but are not limited to: an inability to live up to Rio Tinto's values and any resultant damage to its reputation; the impacts of geopolitics on trade and investment; the impacts of climate change and the transition to a low-carbon future; an inability to successfully execute and/or realise value from acquisitions and divestments; the level of new ore resources, including the results of exploration programmes and/or acquisitions; disruption to strategic partnerships that play a material role in delivering growth, production, cash or market positioning; damage to Rio Tinto's relationships with communities and governments; an inability to attract and retain requisite skilled people; declines in commodity prices and adverse exchange rate movements; an inability to raise sufficient funds for capital investment; inadequate estimates of ore resources and reserves; delays or overruns of large and complex projects; changes in tax regulation; safety incidents or major hazard events; cyber breaches; physical impacts from climate change; the impacts of water scarcity; natural disasters; an inability to successfully manage the closure, reclamation and rehabilitation of sites; the impacts of civil unrest; the impacts of the Covid-19 pandemic; breaches of Rio Tinto's policies, standard and procedures, laws or regulations; trade tensions between the world's major economies; increasing societal and investor expectations, in particular with regard to environmental, social and governance considerations; the impacts of technological advancements; and such other risks identified in Rio Tinto's most recent Annual Report and accounts in Australia and the United Kingdom and the most recent Annual Report on Form 20-F filed with the United States Securities and Exchange Commission (the "SEC") or Form 6-Ks furnished to, or filed with, the SEC. Forward-looking statements should, therefore, be construed in light of such risk factors and undue reliance should not be placed on forward-looking statements. These forward-looking statements speak only as of the date of this report. Rio Tinto expressly disclaims any obligation or undertaking (except as required by applicable law, the UK Listing Rules, the Disclosure Guidance and Transparency Rules of the Financial Conduct Authority and the Listing Rules of the Australian Securities Exchange) to release publicly any updates or revisions to any forward-looking statement contained herein to reflect any change in Rio Tinto's expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based.

Nothing in this report should be interpreted to mean that future earnings per share of Rio Tinto plc or Rio Tinto Limited will necessarily match or exceed its historical published earnings per share.

 
Contacts  Please direct all enquiries to 
            media.enquiries@riotinto.com 
 
 
Media Relations, UK         Media Relations, Australia 
 Matthew Klar                Matt Chambers 
 M+ 44 7796 630 637          M +61 433 525 739 
 
 David Outhwaite             Jesse Riseborough 
 M +44 7787 597 493          M +61 436 653 412 
 
                             Alyesha Anderson 
                             M +61 434 868 118 
 
 
 Media Relations, Americas   Investor Relations, Australia 
 Simon Letendre              Tom Gallop 
 M +1 514 796 4973           M +61 439 353 948 
 
 Malika Cherry               Amar Jambaa 
 M +1 418 592 7293           M +61 472 865 948 
 
 
 Investor Relations, UK 
 Menno Sanderse 
 M: +44 7825 195 178 
 
 David Ovington 
 M +44 7920 010 978 
 
 Clare Peever 
 M +44 7788 967 877 
Rio Tinto plc               Rio Tinto Limited 
 6 St James's Square         Level 43, 120 Collins Street 
 London SW1Y 4AD             Melbourne 3000 
 United Kingdom              Australia 
 
                             T +61 3 9283 3333 
 T +44 20 7781 2000          Registered in Australia 
 Registered in England       ABN 96 004 458 404 
 No. 719885 
 

riotinto.com

This announcement is authorised for release to the market by Rio Tinto's Group Company Secretary.

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