Rerelease High Grade Uranium Intersected in Mauritania

    MURCHISON UNITED NL
                                                                                                         
                                                                               ASX, AIM and Media Release
                                                                                            17 March 2008

Re-release of Announcement from 13 March 2008

In  order to provide clarification to investors, the Company has re-released its announcement from 13 March
that  reported  initial downhole radiometric logging results from drilling carried out at its  Bir  En  Nar
uranium  prospect  in  Mauritania. Additional information has been included with respect  to  the  wireline
logging procedure used to obtain these results.

               HIGH-GRADE URANIUM INTERSECTED AT BIR EN NAR URANIUM PROSPECT, MAURITANIA


                                              Highlights

    -   Several high-grade uranium intersections indicated from downhole radiometric logging of samples
        from RC drilling at the Bir En Nar uranium prospect (Zednes Region, Mauritania).

    -   Logging results received from eight holes of the 41-hole (4,006m) programme, significant results
        included:

        Drill Hole               Section          Intersection Thickness            eU3O8
        RC                       From (m)                             (m)            (ppm)
        
        BNR02                      27.20                            5.65            4,070
        
        "  "                       58.30                            0.70            5,750

        BNR04                       6.25                            1.00            7,180

        BNR05                      40.20                            3.85            3,400

        BNR07                      24.40                            2.15            5,130

        Drill Hole               Section          Intersection Thickness            eU3O8
        RC                       From (m)                             (m)            (ppm)

        BNR08                      55.50                            1.45            3,010

        "  "                       70.80                            2.35        ** 11,250

        "  "                       87.45                            1.55            5,060
        
    -   Further downhole radiometric logging results, together with assay results, will be released when
        received.

Drilling Results - Mauritania

Murchison  United  NL  (ASX:  MUR, AIM: MUU - "Murchison") is pleased to  announce  that  it  has  received
significant  high-grade  results from downhole radiometric logging of samples from the  recently  completed
maiden RC drilling program at the Company's 100% owned Bir En Nar uranium prospect, located in the northern
Zednes region of the Republic of Mauritania, West Africa (see Fig. 3).

To  date,  downhole  logging results have been received for eight holes from the initial drilling  program,
which  comprised a total of 41 RC drill holes of 50 to 150 metres length, inclined 60º towards  south  west
(with a few exceptions) for a total of 4,006m. This programme was carried out during December 2007 by  AMCO
Construction under the supervision of Murchison's Technical Director, Bosse Gustafsson (see Fig. 1).

To view Fig.1 Drilling in Mauritania, December 2007, please open the following link in a new window:
http://media3.marketwire.com/docs/muu0317fig1.pdf

Anomalous  radioactivity  was observed on samples from all but six holes, with the  best  recorded  samples
exceeding 30,000 c/s with a scintillometer SGR from GF instruments.

Poseidon  Geophysics  carried  out  radiometric logging to enable calculation  of  the  equivalent  uranium
content. Results have been received for eight holes so far, with significant readings recorded in seven.

Four  holes  contained intercepts exceeding 5,000ppm eU3O8, with a maximum intercept of 2.35m at  11,250ppm
eU3O8.  These  results  are  considered to be very encouraging and confirm the  prospectivity  for  uranium
mineralization. The Company will announce further results from downhole logging and assay results  as  soon
as they are received.

The  downhole  gamma ray logging, calculation of equivalent uranium grades, and compositing of  mineralised
intervals  was  conducted by consultants Poseidon Geophysics (Pty) Ltd. All holes logged were  inclined  at
approximately 60º, with the deepest hole probed being 150 metres. Three holes were not able  to  be  logged
due  to  collapsed bore holes. The logging programme was undertaken with an Auslog Logging System with  the
estimated  grades reported herein based on calculations by Poseidon Geophysics using data logged  at  5  cm
sampling intervals (see Note at end of this report for further details).

To view Fig.2 Bir En Nar 2007 drilling program, locations of first eight holes, please open the following
link in a new window: http://media3.marketwire.com/docs/muu0317fig2.pdf

The  drilling  focused  on one of the Company's southernmost licences at the Bir En Nar,  where  episyenite
samples collected during previous field reconnaissance visits returned assays of up to 9,500ppm Uranium.

The  Bir En Nar prospect is a 900 metre long radioactive zone extending 50-70 metres in width and following
a tectonic structure in a NW-SE direction (see Fig. 2). A smaller parallel zone occurs a few hundred metres
to  the  SW. The main mineralisation occurs along a fracture zone at the contact between higher radioactive
granite  in  south  west  and  lower  radioactive syenite in  north  east.  Episyenite  pods  with  uranium
impregnation  build up the mineralisation. The prospect was covered by RC drilling with SW-NE traverses  at
70 metre spacings.

Radiometric logging results received to date from initial drilling at the Bir En Nar Prospect:

        Drill Hole              Section     Intersection Thickness            eU3O8
        RC                      From (m)                        (m)            (ppm)
        
        BNR01                      4.60                       0.65              540
        
        BNR02                     27.20                       5.65            4,070
        
                                  34.20                       2.15              770

                                  58.30                       0.70            5,750

                                  62.75                       0.30            1,470

                                  89.40                       0.75            1,230

                                 104.30                       0.55            1,730

        BNR03                                                            No anomaly

        BNR04                      6.25                       1.00            7,180

        BNR05                     40.20                       3.85            3,400

        BNR06                     91.60                       4.00              580

        BNR07                     24.40                       2.15            5,130

        BNR08                     55.50                       1.45            3,010

                                  70.80                       2.35           11,250

                                  74.10                       0.40            2,060

                                  85.15                       1.40            3,130

                                  87.45                       1.55            5,060

Approximately  1,000 assay samples, each representing 1 metre of drilling, were also collected  for  multi-
element analysis in Canada by ALS Chemex. Assay results will be released as they become available.

The permit areas are located in the north of the country near the town of Bir Moghrein and at Bir En Nar in
Zednes  region. These were originally identified by the Company's Technical Director, Mr Bosse  Gustafsson,
from a study commissioned by the World Bank and further refined from aeroradiometric data highlighting  the
region's prospectivity for uranium occurrences.

To view Fig.3 Location of Murchison United's exploration permits in Mauritania, please open the following
link in a new window: http://media3.marketwire.com/docs/muu0317fig3.pdf

Murchison  United  has  secured  an  extensive portfolio of uranium exploration  projects  comprising  some
13,600km2  of  highly  prospective tenements in Mauritania and Guinea, West Africa.  Its  objective  is  to
delineate significant new uranium deposits within these under-explored terrains.

In Guinea, initial drilling of the Company's Bohoduo uranium prospect and reconnaissance exploration at the
Sesse uranium prospect is to be carried out during Q2 2008.

A  5,000m diamond drilling program at Firawa prospect in Guinea, is scheduled to commence in September 2008
following  the  wet  season,  targeting a JORC compliant resource estimate to follow  up  initial  drilling
carried out in 2007.

Commenting on the results, Murchison United's Managing Director, Mr Mark Reilly, said "The exciting results
attained so far at Bir En Nar in Mauritania follow on from the successful drilling program undertaken  last
year at Firawa, Guinea, and the recently completed A$7.4 million share placement.

We  are  eagerly  awaiting the remaining logging and assay results from Bir En Nar and we look  forward  to
embarking on further drilling programmes this year at the Bohoduo and Firawa Prospects in Guinea."

Murchison  United  NL  is  an Australian-based no liability company whose principal  activity  is  minerals
exploration. The company currently has uranium exploration projects in Mauritania and Guinea in West Africa
and  copper interests in the Millennium copper leases in Cloncurry, Queensland and the Maroochydore  copper
project in Western Australia.

Shares  in  the  company are listed on both the Australian Stock Exchange (ASX: MUR)  and  the  Alternative
Investment Market (AIM: MUU) of the London Stock Exchange

For further information regarding this announcement, please call Mark Reilly.






..........
Mark Reilly
Managing Director

Notes:

The  information in this report that relates to exploration results in West Africa is based on  information
compiled  by  Mr. Bosse Gustafsson, who is a member of the European Federation of Geologists  a  Recognised
Overseas  Professional  Organisation ("ROPO"). Mr Bosse Gustafsson is a full  time  Technical  Director  of
Murchison  United NL and is responsible for exploration activities in Mauritania and Guinea. Mr  Gustafsson
has  sufficient experience, which is relevant to the style of mineralisation and the type of deposit  under
consideration and to the activity, which he is undertaking to qualify as a Competent Person as  defined  in
the  2004 Edition of the 'Australian Code for Reporting of Exploration Results, Mineral Resources  and  Ore
Reserve'.  Mr Gustafsson consents to the inclusion in this report of the matters based on their information
in the form and context in which it appears.

Down  hole  gamma logging/probing of drill holes provides a powerful tool for uranium companies to  explore
for,  and  evaluate, uranium deposits. Such a method measures the natural gamma rays emitted from  material
surrounding a drill hole out to around 0.5 metre from its centre - the gamma probe is therefore capable  of
sampling  a  much larger volume than that which would normally be recovered from a core or RC  hole.  These
measurements  are  used  to estimate uranium concentrations with the commonly accepted  initial  assumption
being that the uranium is in (secular) equilibrium with its daughter products (or radio-nuclides) which are
the  principal gamma emitters. If uranium is not in equilibrium (viz. in disequilibrium) - as a  result  of
the  redistribution  (depletion or enhancement) of uranium and/or its daughter products  -  then  the  true
uranium concentration in the holes logged using the gamma probe will be higher or lower than those reported
in the announcement.

Total  count gamma logging does not account for energy derived from thorium and potassium but is calibrated
on  the uranium band and factor applied to account for the average effect of thorium and potassium and thus
the  result  is  expressed  as an equivalent value or ppm eU308. The logging programme  was  undertaken  by
Poseidon Geophysics (Pty) Ltd utilising an Auslog Logging System using instruments calibrated at Pelindaba,
South  Africa,  an  IAEA accepted and approved standard facility. Data was converted from  raw  counts  per
second of natural gamma rays to eU3O8 using the calibration constant obtained from measurements made at the
Pelindaba calibration borehole. Poseidon Geophysics carried out regular checks to validate the accuracy  of
probe  data  using a test hole, BNR14, located on site. Uranium mineralisation grades through  this  report
annotated  with  a  sub-prefix 'e' have been reported as uranium equivalent grades derived  from  down-hole
gamma ray logging results and should be regarded as approximations only.

								
Murchison United N.L