MURCHISON UNITED NL
                                                                                         ACN 009 087 852
                                                                         ASX CODE:  MUR,  AIM CODE: MUU,
                                                          Telephone: +618 9322 4071, Fax: +618 9322 4073
                                                                                                        
                                                                                                        
                                                                                                         
                                                                               ASX, AIM and Media Release
                                                                                            28 June 2007
                                                                                                           
                       MURCHISON FURTHER EXPANDS WEST AFRICAN URANIUM PORTFOLIO
                             6TH EXPLORATION LICENCE GRANTED IN MAURITANIA

Murchison  United NL (ASX: MUR, AIM: MUU) is pleased to announce that it has further expanded  its  uranium
exploration portfolio in West Africa after being granted an additional "Group 4" Uranium Exploration permit
by the Republic of Mauritania covering an area of 1,433 square kilometres.

The  Company now holds six uranium exploration permits in Mauritania covering a total area of 8,200km2 with
two remaining applications currently being processed.

The  permit  areas  are in the north of the country near the town of Bir Moghrein and in  the  Bir  En  Nar
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 aeromagnetic data highlighting  the  areas'
prospectivity for uranium occurrences.

Field  visits  carried  out by Murchison have since confirmed the prospectivity of the  licence  areas  for
uranium,  with previously reported sample results of up to 9,500ppm U3O8. Earlier this year,  a  geolectric
survey  was  conducted on a number of the key prospect areas identified. The purpose of this survey  is  to
assist  as  an exploration tool in estimating the depth to the bedrock basement. This will in  turn  assist
planning for a drilling programme.

Following  completion of its first drilling programme in Guinea in May, Murchison is currently  negotiating
access  to  a  drilling rig in order to commence drilling at its licences in Mauritania, with  the  initial
focus  expected to be on the Bir En Nar region. Depending upon drill rig availability, the Company aims  to
commence drilling within 2 months.

Please call Mark Reilly with any queries.





Mark Reilly
Managing Director




The  information in this announcement that relates to exploration results 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 Executive  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.


Murchison's Nominated Advisor for the AIM market is RFC Corporate Finance Ltd.
Contact: Stuart Laing, Ph: +618 9480 2506"

                                                                
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