Exploration Update

Thor Mining PLC
20 October 2006

                                THOR MINING PLC



          Exploration Update - Hale River and Plenty Highway tenements

Dated: 20 October 2006

Thor Mining PLC ('Thor') the specialist metals company currently focussed on
advancing tungsten-molybdenum and uranium projects in the Northern Territory of
Australia, today announces it will commence a helicopter borne HoistEM(TM)
survey on its Hale River and Plenty Highway tenements during the week commencing
23 October 2006.

Highlights

  • Helicopter borne HoistEM(TM) survey on its Hale River and Plenty Highway
    tenements to commence;

  • The two projects cover almost 1200sq kms of tertiary palaeo-drainage
    channels; and

  • Thor's Northern Territory uranium portfolio of over 3000 sq kms includes
    numerous prospective areas with strong exploration history and proximity to
    existing uranium discoveries.


The survey is being flown by WorleyParsons GPX Airborne Pty Ltd, a Western
Australian based geophysical company that specialises in airborne
electromagnetic techniques. Based on previous experience, it is anticipated that
the electromagnetic survey will respond to saline water in buried tertiary
palaeo-channels and define basin shapes prospective for Roll Front Uranium
deposits and therefore pinpoint targets for follow up drilling. The survey is
being conducted over the northern section of the garden sub-basin (Hale River)
and the Waite Basin (Plenty Highway), believed to hold the highest promise for a
new uranium discovery. The airborne surveys will be completed on 200m and 400m
line spacings respectively.



JORC Compliance

The information in this report that relates to exploration results, mineral
resources or ore reserves is based on information compiled by John Young, who is
a Member of The Australasian Institute of Mining and Metallurgy. John Young, the
Chief Executive Officer of Thor, has sufficient experience which is relevant to
the style of mineralisation and 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 'Australasian Code for Reporting of Exploration Results,
Mineral Resources and Ore Reserves'.



John Young consents to the inclusion in this RNS announcement of the matters
based on his information in the form and context in which it appears.)



Enquiries:

John Young         [phone]   Thor Mining PLC        Chief Executive
                                                               Officer

John Simpson       020 7512 0191        ARM Corporate Finance  Nominated Adviser
                                        Limited

Leesa Peters       020 7429 6600        Conduit PR Limited     Public Relations/UK
    or
Abigail Singleton  020 7429 6606

Nicolas Read       [phone]  Jan Hope & Partners    Public Relations/
                                                               Australia





Updates on the Company's activities are regularly posted on Thor's website
www.thormining.com, which includes a facility to register to receive these
updates by email.


                      This information is provided by RNS
            The company news service from the London Stock Exchange