Century Announces Updated Duncan Lake Iron Project 43-101 Compliant Resource Estimate Exceeds Expectations

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Century Iron Mines Corporation (TSX:FER) ("Century") is pleased to announce the
completion of an updated National Instrument 43-101 compliant Resource Estimate
for the Duncan Lake Iron Project. Century and Augyva Mining Resources Inc. (TSX
VENTURE:AUV) ("Augyva") are joint venture partners on the Duncan Lake Iron
Project. 


Since the last resource estimate in 2010, Century has drilled an additional
44,007 m of core in 125 drill holes. Century reports that these drill programs
were highly successful in increasing total tonnage and improving resource
classification. 


An updated independent mineral resource estimate by Met-Chem Canada Inc.
("Met-Chem") has defined 1.05 billion tonnes of Measured and Indicated at a
grade of 24.4% Fe, compared to a previously reported 31.3 million tonnes at a
grade of 23.7% Fe in 2010. Inferred resources are 563 million tonnes at a grade
of 24.7% Fe compared to a previously reported 821 million tonnes at a grade of
24.6% Fe.




Duncan Lake Iron Ore Property Mineral Resources at 16% Fe cutoff            
-----------------------------------------------------------------------
Mineral Resource Class     Million Tonnes      Fe %    DTWR %   DT Fe %
-----------------------------------------------------------------------
Measured                              406      23.9      26.8      67.3
-----------------------------------------------------------------------
Indicated                             645      24.7      28.1      66.9
-----------------------------------------------------------------------
Measured & Indicated                1,050      24.4      26.5      67.0
-----------------------------------------------------------------------
Inferred                              563      24.7      28.0      66.5
-----------------------------------------------------------------------
(Note 1: DTWR % is the Davis Tube Weight Recovery; DT Fe % is the Davis Tube
Fe Concentrate Grade)                                                       
(Note 2: Total tonnage may vary due to rounding)                            
(Note 3: The effective date of the mineral resource estimate is August 24th,
2012)                                                                       
(Note 4: Resource estimate is based on all six Duncan Lake zones)           



Sandy Chim, President and CEO of Century said, "We are extremely pleased with
this new resource estimate update for Duncan Lake, which has in excess of one
billion tonnes in the Measured & Indicated categories, representing over 30
times more than the resource estimate of same categories in the last NI 43-101
report. There is also a substantial resource tonnage of over half a billion in
the Inferred category. The completion of each successive drill program has
resulted in this very substantial improvement and increase in the mineral
resource estimate, while continuing to confirm consistent grades. This resource
estimate update clearly adds solid fundamentals that underline the potential and
value of the Duncan Lake project. The new mineral resources will form a sound
basis for the Preliminary Economic Assessment ("PEA") is being prepared by
Met-Chem, which is targeting an annual production of 12 million pellet tonnes at
better than 67% iron grade and with all other elements within commercial
specification. The PEA is targeted for about year end." 


Met-Chem's Duncan Lake Mineral Resource Technical Report will be filed on SEDAR
(www.sedar.com) within 45 days.


Qualified Persons 

Met-Chem's Yves-A Buro, Eng. was responsible for validating the database and
estimating the mineral resources and has reviewed and approved the contents of
this news release. Yves-A Buro is a Qualified Person and independent of Augyva
and Century within the meaning of NI 43-101 - Standards of Disclosure for
Mineral Projects of the Canadian Securities Administrators. 


Resource Estimation Methodology 

The samples were analyzed by ALS Canada Ltd. ("ALS") via lithium borate XRF, and
sulphur was determined by Leco furnace. Iron was reported as total ferric iron
and calculated as total iron by Century. 


The mineral resource estimate for Duncan Lake was based on 9,178 assays
collected from 54,467 m of drilling in 177 drill holes. The estimate was also
based on a total of 843 Davis Tube samples of which 414 samples were tested at
SGS Canada Inc ("SGS"), 285 at IOS and 144 at Corem. Chemical analysis
established that, on average, the iron formation at the Duncan Lake Iron Project
contains very low levels of deleterious elements, in particular phosphorus
(0.02% P2O5), manganese (0.03% MnO) and magnesium (0.23% MgO). 


The Davis Tube results indicate a predominance of magnetite with good quality
concentrate grades suggesting that this type of iron mineralization should be
amenable to a relatively simple magnetic separation based process flow sheet. No
significant deleterious issues were identified in the Davis Tube concentrates. 


Estimation methodology was based on interpreting vertical cross-sections which
were meshed into 3D solids. These resource solids were used to constrain inverse
distance squared estimates within 6 separate block models. Solids boundaries
were defined by a combination of lithology and Fe grade. Regular 20 m x 10 m x 5
m block sizes were used for each of the block models. Search ellipses reflecting
unique dips and strikes to the various fold limbs were used to constrain the
interpolation. Assay sample lengths were composited to a nominal 3 m length for
grade interpolation. Total head Fe, Davis Tube Weight Recovery, Fe and SiO2% in
Davis Tube concentrates were modelled. A global density factor of 3.2 g/cc for
ore was based on 3107 samples and was assigned to the block models. 


The 3D interpretations indicate that all six of the iron formation zones are
tightly folded, steeply dipping and thickened along an ENE trend. All six zones
are spread along a strike length of approximately 30km, are located near surface
with minimal overburden cover and extend to the ENE and WSW of HWY 109. The
location of these zones are sufficiently concentrated to feed a single process
plant and are amenable to open pit mining methods. 


Mineral resources were classified based on search ellipse ranges and minimum
number of informing composites. A measured resource classification was assigned
to blocks interpolated by a minimum of 12 composites and maximum search ellipse
range of 300 m along the major axis, 150 m along the semi-major axis and 20 m
along the minor axis. Indicated was assigned to blocks interpolated by a minimum
of 6 composites and maximum search ellipse range of 300 m along the major axis,
150 m along the semi-major axis and 20 m along the minor axis. Inferred was
assigned to blocks interpolated by a minimum of 3 composites and maximum search
ellipse range of 450 m along the major axis, 225 m along the semi-major axis and
30 m along the minor axis. 


Mineral resources are reported to a cut-off of 16% Fe and are not constrained to
a pit shell. 


The estimate of Mineral Resource may be materially affected by environmental,
permitting, legal, title, socio-political, marketing, or other relevant issues.
However, Met-Chem is not aware of any known environmental, permitting, legal,
title, taxation, socio-political, marketing or other issues that would
materially affect the mineral resources. 


The quantity and grade of reported Inferred mineral resources in this estimate
are uncertain in nature and there has been insufficient exploration to define
the Inferred mineral resources as Indicated or Measured mineral resources and it
is uncertain if further exploration will result in upgrading them to Indicated
or Measured mineral resource categories. 


The mineral resources are reported in accordance with Canadian Securities
Administrators ("CSA") NI 43-101 and have been classified in accordance with
standards as defined by the "Canadian Institute of Mining, Metallurgy and
Petroleum ("CIM") CIM Definition Standards - For Mineral Resources and Mineral
Reserves." Mineral resources which are not mineral reserves do not have
demonstrated economic viability. 


A detailed list of Mineral Resources at a 16% Fe cutoff by Zone is provided below.



------------------------------------------------------------------------
------------------------------------------------------------------------
                       Measured Mineral Resources                       
------------------------------------------------------------------------
------------------------------------------------------------------------
Zone      Metric Tonnes     Fe (%)    DTWR (%)   DT SiO2 (%)   DT Fe (%)
------------------------------------------------------------------------
1            27,000,000      22.01       23.98          9.34       64.27
------------------------------------------------------------------------
2             4,000,000      27.05       33.96          6.96       66.34
------------------------------------------------------------------------
3           169,000,000      24.32       26.88          3.39       68.28
------------------------------------------------------------------------
4           162,000,000      23.60       26.49          6.20       66.92
------------------------------------------------------------------------
5                                                                       
------------------------------------------------------------------------
6            42,000,000      24.48       28.50          6.21       66.57
------------------------------------------------------------------------
------------------------------------------------------------------------
Total       406,000,000      23.92       26.78          5.25       67.26
------------------------------------------------------------------------
------------------------------------------------------------------------
                                                                        
------------------------------------------------------------------------
------------------------------------------------------------------------
                       Indicated Mineral Resources                      
------------------------------------------------------------------------
------------------------------------------------------------------------
Zone      Metric Tonnes     Fe (%)    DTWR (%)   DT SiO2 (%)   DT Fe (%)
------------------------------------------------------------------------
1            89,000,000      23.34       25.26         11.48       62.24
------------------------------------------------------------------------
2            31,000,000      27.33       34.81          5.81       67.33
------------------------------------------------------------------------
3           324,000,000      25.06       28.35          3.63       68.10
------------------------------------------------------------------------
4           141,000,000      24.14       27.17          5.99       66.98
------------------------------------------------------------------------
5                                                                       
------------------------------------------------------------------------
6            60,000,000      25.05       29.56          6.47       66.55
------------------------------------------------------------------------
------------------------------------------------------------------------
Total       645,000,000      24.73       28.09          5.60       66.87
------------------------------------------------------------------------
------------------------------------------------------------------------
                                                                        
------------------------------------------------------------------------
------------------------------------------------------------------------
              Total Measured & Indicated Mineral Resources              
------------------------------------------------------------------------
------------------------------------------------------------------------
Zone      Metric Tonnes     Fe (%)    DTWR (%)   DT SiO2 (%)   DT Fe (%)
------------------------------------------------------------------------
1           116,000,000      23.03       24.96         10.98       62.72
------------------------------------------------------------------------
2            36,000,000      27.29       34.71          5.95       67.21
------------------------------------------------------------------------
3           493,000,000      24.81       27.85          3.54       68.16
------------------------------------------------------------------------
4           304,000,000      23.85       26.80          6.10       66.94
------------------------------------------------------------------------
5                                                                       
------------------------------------------------------------------------
6           102,000,000      24.81       29.12          6.37       66.56
------------------------------------------------------------------------
------------------------------------------------------------------------
Total      1050,000,000      24.42       26.48          5.46       67.02
------------------------------------------------------------------------
------------------------------------------------------------------------
                                                                        
------------------------------------------------------------------------
------------------------------------------------------------------------
                       Inferred Mineral Resources                       
------------------------------------------------------------------------
------------------------------------------------------------------------
Zone      Metric Tonnes     Fe (%)    DTWR (%)   DT SiO2 (%)   DT Fe (%)
------------------------------------------------------------------------
1           139,000,000      22.80       24.42          9.84       63.51
------------------------------------------------------------------------
2            63,000,000      26.10       31.33          3.33       68.65
------------------------------------------------------------------------
3           202,000,000      25.49       29.16          3.96       67.88
------------------------------------------------------------------------
4            75,000,000      23.92       26.88          6.52       66.45
------------------------------------------------------------------------
5            51,000,000      25.63       29.34                          
------------------------------------------------------------------------
6            33,000,000      25.23       29.65          6.68       66.10
------------------------------------------------------------------------
------------------------------------------------------------------------
Total       563,000,000      24.69       27.97          6.03       66.46
------------------------------------------------------------------------
------------------------------------------------------------------------
                                                                            
(Note 1: DTWR % is the Davis Tube Weight Recovery; DT Fe % is the Davis Tube
Fe Concentrate Grade)                                                       
(Note 2: Zone tonnage estimates are rounded to the closest 1 million tonnes.
Totals of zone tonnages are from original estimated zone tonnage and as such
totals of zone tonnage may vary in table above)                             



About the Duncan Lake Property 

The Duncan Lake Iron Property ("DLIP") is located approximately 570 km north of
Matagami, Quebec, and can be easily accessed via paved road (Highway 109),
connecting Matagami to Radisson. Road distance from Montreal to DLIP is
estimated to be 1,350 km. The property is located 50 km south of Radisson and 10
km south of the LG2 regional airport. 


The property has recently been expanded to 534 exploration claims covering
25,605 hectares. 


The DLIP is subject to a joint venture agreement between Century, which holds a
51% interest, and Augyva, which holds a 49% interest under an option and joint
venture agreement dated May 20, 2008. 


On November 11, 2010, Century completed its funding of $6,000,000 to earn an
initial 51% interest in the DLIP in accordance with the JV Agreement. Pursuant
to the JV Agreement, and after earning the initial 51% interest, Century will
have the option to increase its interest in the property to 65% by expending a
further $14 million during the following 4 years thereafter.  


About the Company 

Century Iron Mines Corporation (TSX:FER) is Canada's largest holder of iron ore
land claims, with interests in several properties in the Provinces of Quebec and
Newfoundland and Labrador. Century's mission is to enhance shareholder value
through the development of iron ore projects in Canada and to become a major
Canadian iron ore producer. Century has promising iron ore assets and is firmly
entrenched in western Quebec and in the prolific iron ore-producing region of
the Labrador Trough in eastern Quebec and western Labrador. The Company has two
key strategic partners in WISCO International Resources Development & Investment
Limited and Minmetals Exploration & Development (Luxembourg) Limited S.ar.l.,
both state-owned Chinese companies with the financial and technical resources to
assist the Company with funding and technical expertise for the exploration and
development of its iron ore projects.


The Company has interests in the following mineral exploration projects located
in Quebec and Newfoundland and Labrador:




--  The Duncan Lake Project of which the Company currently has a 51%
    interest with an option to increase to a 65% interest under an option
    and joint venture agreement with Augyva Mining Resources Inc.; 
    
--  The Attikamagen Project of which the Company currently has an option to
    acquire up to a 60% interest under an option and joint venture agreement
    with Champion Minerals Inc. (TSX:CHM); 
    
--  The Sunny Lake Project (100% owned by Century Iron) and; 
    
--  The Astray, Grenville, Menihek and Schefferville projects recently
    acquired from Altius Minerals Corp. (TSX:ALS) (100% owned by Century
    Iron). 



The Company's objective is to enhance shareholder value through the development
of iron ore projects in Canada and to become a Canadian iron ore producer.
Century Iron's website is: www.centuryiron.com.


Forward Looking Information 

This press release contains forward-looking statements and information that are
based on the beliefs of management and reflect the Company's current
expectations. When used in this press release, the words "estimate", "project",
"belief", "anticipate", "intend", "expect", "plan", "predict", "may" or "should"
and the negative of these words or such variations thereon or comparable
terminology are intended to identify forward-looking statements and information.
The forward-looking statements and information in this press release includes
information relating to the expected completion of the current drilling phase at
Duncan Lake and the Company's objective to enhance shareholder value through the
development of iron ore projects in Canada and to become a major Canadian iron
ore producer. The forward-looking information is based on certain assumptions,
which could change materially in the future, including the assumption that the
Company is able to complete the current phase III an extension to the Phase II
drilling program and that the development of the Company's iron ore projects
will enhance shareholder value and be sufficient for it to become a major
Canadian iron ore producer. Such statements and information reflect the current
view of the Company with respect to risks and uncertainties that may cause
actual results to differ materially from those contemplated in those
forward-looking statements and information. By their nature, forward-looking
statements involve known and unknown risks, uncertainties and other factors
which may cause our actual results, performance or achievements, or other future
events, to be materially different from any future results, performance or
achievements expressed or implied by such forward-looking statements. Such
factors include, among others, the risk that the current phase III an extension
to the Phase II drilling program at Duncan Lake may be delayed or may not be
completed and that the Company's Canadian iron ore projects may not succeed in
enhancing shareholder value or allow the Company to become a major Canadian iron
ore producer. The Company cautions that the foregoing list of material factors
is not exhaustive. When relying on the Company's forward-looking statements and
information to make decisions, investors and others should carefully consider
the foregoing factors and other uncertainties and potential events. The Company
has assumed a certain progression, which may not be realized. It has also
assumed that the material factors referred to above will not cause such
forward-looking statements and information to differ materially from actual
results or events. However, the list of these factors is not exhaustive and is
subject to change and there can be no assurance that such assumptions will
reflect the actual outcome of such items or factors. 


THE FORWARD-LOOKING INFORMATION CONTAINED IN THIS PRESS RELEASE REPRESENTS THE
EXPECTATIONS OF THE COMPANY AS OF THE DATE OF THIS PRESS RELEASE AND,
ACCORDINGLY, IS SUBJECT TO CHANGE AFTER SUCH DATE. READERS SHOULD NOT PLACE
UNDUE IMPORTANCE ON FORWARD-LOOKING INFORMATION AND SHOULD NOT RELY UPON THIS
INFORMATION AS OF ANY OTHER DATE. WHILE THE COMPANY MAY ELECT TO, IT DOES NOT
UNDERTAKE TO UPDATE THIS INFORMATION AT ANY PARTICULAR TIME EXCEPT AS REQUIRED
IN ACCORDANCE WITH APPLICABLE LAWS.