Exploration Update

Thor Mining PLC
13 February 2007

                                THOR MINING PLC



 Uranium Exploration Update - Harts Range, Plenty Highway and Bundey Tenements



Dated: 13 February 2007



Thor Mining PLC ('Thor') the specialist metals company currently focussed on
advancing tungsten-molybdenum and uranium projects in the Northern Territory of
Australia is pleased to advise that further reconnaissance sampling at its Harts
Range, Plenty Highway and Bundey Uranium in the Northern Territory has returned
encouraging results, including several elevated uranium values. The Company has
also announced initial results from the comprehensive Hoist EM survey covering
its Northern Territory uranium portfolio, with drill testing of key targets set
to commence shortly.




Highlights



•   Uranium values up to 8.8% U returned from rock chip sampling from the Harts
Range and Bundey uranium projects, Northern Territory.



•   Three major palaeo-channels with potential to host roll front uranium
deposits identified from recently completed Hoist EM survey covering the Plenty
Highway uranium project.



•   Drilling programs at Plenty Highway and Hale River set to commence in March/
April 2007.





Hale Energy Tenements


CURTIS POUND URANIUM PROJECT                    EL24823         Curtis Pound Project
HALE RIVER URANIUM PROJECT                      EL24809         Hale River Project
HARTS RANGE URANIUM PROJECT                     EL24734         Harts Range Project
                                                EL24735         Harts Range Project
                                                EL24736         Harts Range Project
                                                EL24765         Harts Range Project
                                                EL24827         Harts Range Project
                                                A24766          Harts Range Project
PLENTY HIGHWAY URANIUM PROJECT                  EL24810         Plenty Highway Project
BUNDEY RIVER                                    ELA25378        Bundey River Project



Reconnaissance exploration work has been completed within the Harts Range
tenement group. A number of samples returned significant results of > 0.10% U,
all of which have a very strong rare earth element ('REE') association. One
particular sample from an area near the Haddock Prospect, EL 24736 was very high
in uranium (8.87% U), tantalum (19%) and niobium (18%), suggests that the sample
contained coarse tantalite crystals.



Two significant results of 0.17% U and 0.26% U were also returned from the
Garnet prospect, located within EL 24765. Detailed mapping and radiometric
surveys of these structures and pegmatites is essential in order to develop an
exploration model which may lead to an economic uranium discovery in the Harts
Ranges.



Thor also advises that it has received an initial interpretation from the
recently completed Hoist EM survey covering the Plenty Highway uranium project.
This interpretation indicates the presence of three major east west
palaeo-channels with the potential to host uranium mineralisation within the
project area. These palaeo-channels are believed to contain significant
carbonaceous matter, the essential ingredient for the formation of roll front
uranium deposits.



Following receipt of the results of the survey for the Plenty Highway and Hale
River projects, Thor has commenced detailed planning for targeted follow-up
drilling programs, which are scheduled to commence in March/April 2007.



Commenting on the results, Thor's Chief Executive Officer, Mr John A. Young,
said: 'We are very pleased with the results from the HoistEM Survey which has
successfully defined priority drilling targets, particularly within the major
palaeo-channels identified at Plenty Highway.'



'Further work is required within the Harts Range tenements to delineate drilling
targets however we now have a much better understanding of the mineralisation
styles and the geology that hosts a number of high-priority uranium prospects.
Importantly, the recent sampling results have also confirmed the prospectivity
of the area to host uranium mineralisation.'



Summary



Harts Range Exploration



In late November 2006, a scintillometer orientation survey was carried out in
the Harts Range uranium prospect located approximately 200km east-northeast of
Alice Springs in the Arunta Province of the Northern Territory. The project
includes six tenements EL24827, EL24734, EL24735, EL24736, EL24765 and A24766.
Reconnaissance exploration was also completed along the eastern portion of the
Bundey River tenement.



The main objective of the sampling program was to identify known prospects and
determine optimal access routes and logistics for exploration in 2007.



In the Harts Range ground reconnaissance work was completed over tenements
EL24736, EL24765 and EL24734, with scintillometer readings taken at various
locations including several prospects with historic uranium exploration results.
In total, fourteen samples were collected.



Harts Range - EL24736



At the Haddock Creek and Diacos prospects, a number of sub-parallel pegmatites
were surveyed with a maximum count of 19,000 cps. Four samples were taken within
EL24736, with one 1.5kg sample returning a very high uranium result of 8.87% U
with associated REE, tantalum, niobium, and yttrium. Samples HR12, HR14 and HR15
were also anomalous, with results ranging from 146ppm to 0.27% uranium.



Further Haddock-style anomalies have been identified at points along a
stratigraphic arc extending north. Approximately 12 km of prospective strike
length has been identified representing potential host extensions or repetitions
of epidosite-pegmatoid layers.


 SAMPLE ID       EAST        NORTH         PROSPECT     CPS         COMMENTS          Th(ppm)      U(ppm)
               (GDA94)      (GDA94)

   HR 12        513123      7445215     Haddock Creek    1200-1800  Pegmatite.            25.4       158.5

                                                                    Highly Anomalous
                                                                    point source.

   HR 13        516902      7439841         Daicos       6000-7000  Qtz Pegmatite.       0.71%       8.87%
                                                                    Anomalous zone
                                                                    18m by 20-50cm
                                                                    wide at contact.

   HR 14        516902      7439841         Daicos       6000-7000  Qtz Pegmatite.        99.5        925
                                                                    Fault zone.?
                                                                    Anomalous
                                                                    parallel zone to
                                                                    the south.

   HR 15        516842      7439565         Daicos         1500     Large Pegmatite       245        0.27%
                                                                    above
                                                                    HR13-14
                                                                    Max 19,000cps.



All units are in ppm unless otherwise stated



Harts Range - EL24765



Five samples (HR16-HR20) were taken from the Garnet Prospect, located on
adjacent tenement EL24765, with background readings at this locality ranging
from 450-6000cps. Samples from this area were taken here in a medium-to-fine
grained altered pegmatite, rich in garnet. The results were very encouraging
with two samples returning elevated uranium values of 0.17% and 0.26%.



PNC mapped this area in 1993 and determined that the strongest radioactivity
occurs where the pegmatite has been more extensively altered to garnet. Historic
PNC assays at this prospect ranged between 18-2,900ppm U, 100-4,000ppm Y and
100-2,600ppm Nb. Garnet contaminated pegmatite returned the highest assays while
garnet-quartz-biotite alteration returned lower grades.


 SAMPLE ID       EAST        NORTH         PROSPECT        CPS     COMMENTS           Th(ppm)      U(ppm)
               (GDA94)      (GDA94)

   HR 16        514061      7429930         Garnet       450-6600  Altered Pegmatite      197        0.17%
                                                                   Rich in garnet,
                                                                   with skarn rafts
                                                                   in pegmatite.

   HR 17        514061      7429930         Garnet       450-6600  Altered Pegmatite      244        0.26%
                                                                   Rich in garnet,
                                                                   with skarn rafts
                                                                   in pegmatite.

   HR 18        514061      7429930         Garnet       450-6600  Altered Pegmatite      18.6        141
                                                                   Rich in garnet,
                                                                   with skarn rafts
                                                                   in pegmatite.

   HR 19        514807      7429132          Ant           260     Anomalous zone         20.5        34.4
                                                                   associated with
                                                                   silica-epidote
                                                                   veining. Past
                                                                   digging in Creek
                                                                   Bed.

   HR 20        513300      7429415      Near Goanna       2400    Single Anmolaly,       7.48        87.8
                                                                   in thin (60-80cm)
                                                                   Peg dyke, cross
                                                                   cutting bedded
                                                                   mafic
                                                                   metasediments
                                                                   (bio-qtz-fdsp).



All units are in ppm unless otherwise stated



Harts Range - EL24734



The Harts Range project area lies on the eastern margin of the Entia Dome. The
Entia Gneiss (Harts Range Group) forms the core of the Entia Dome, which is
located on the western part of the exploration licence area.



Regional exploration resulted in the identification of a single pegmatite some
6.3km in length and 50m wide at Mt Mary. Two rock chips taken from 'hot spots'
in this area returned elevated uranium values ranging from 107 to 246ppm. A
second pegmatite, which also has extensive strike (2km) and width (63m), has
been identified to the north-east, but has not been sampled as yet.



Further work is recommended in this area, given that these larger scale
intrusives are generally similar to the pegmatites mined at the Rossing Mine in
Namibia. This type of deposit generally has lower grades (0.05% U) and high
tonnages. Detailed mapping and radiometric surveys of these structures and
pegmatites is essential in order to develop an exploration model which will lead
to an economic uranium discovery in the Harts Range. Mt Mary has had little
historic exploration and will be a priority target in the Company's next field
program.



Ongoing exploration will also cover the SNAF and Kelly Prospects, located to the
north and south of Mt Mary. Historic rock chip sampling by PNC at these
prospects returned very high-grade uranium assays ranging from 550-1,580 ppm U.



The mineralisation at these prospects is believed to be an intrusive-style,
similar to the uranium deposits occurring in the Olary Province in South
Australia, which are associated with Mesoproterozoic intrusives. One of these,
Radium Hill, has a number of uranium-rare earth bodies occurring in narrow,
steeply-dipping pegmatitic veins in shear zones within quartzo-feldspathic
gneiss.


 SAMPLE ID       EAST        NORTH         PROSPECT        CPS     COMMENTS            Th(ppm)      U(ppm)
               (GDA94)      (GDA94)

   HR 23        532703      7452531        Mt Mary       700-1500  Large Pegmatite     197          47.9
                                                                   contact zone with
                                                                   biotite-gneissic
                                                                   rock.

   HR 24        532488      7452386        Mt Mary       450-2500  Signs of migmatite, 10.75        246
                                                                   and partly melted
                                                                   bio-gneissic
                                                                   zenoliths.

   HR 25        532194      7452330        Mt Mary       450-2500  Similar             13.25        107.5



All units are in ppm unless otherwise stated



Bundey River - EL25378



Three radiometric anomalies have been identified in the eastern part of the
Bundey River project area from airborne radiometric survey compiled by the
Northern Territory Geological Survey onto a 1:250,000 map.



Two samples were taken from this area with disappointing uranium results. While
no calcrete samples were able to be taken, a consistently high scintillometer
count was taken over the main drainage channel. Sampling returned an anomalous
thorium value in exposed lateritic remnants, confirming the potential for
tertiary basin and drainage hosted uranium.



This area requires investigation by a small drilling rig mounted on a four wheel
drive vehicle.


 SAMPLE ID       EAST        NORTH         PROSPECT         CPS    COMMENTS          Th(ppm)      U(ppm)
               (GDA94)      (GDA94)

   HR 21        514060      7490850      Bundey River     350-900  Lateritised acid  34.1         21.5
                                                                   volcanic? High
                                                                   background
                                                                   (350-900cps).

   HR 22        514060      7490850      Bundey River     350-900  Couldn't find     565          9.32
                                                                   source of anomall
                                                                   (more active than
                                                                   HR 21)



Plenty Highway Hoist EM Interpretation



The Plenty Highway project area (EL24810) occurs on the Precambrian Arunta Block
with fluvial and lacustrine sediments accumulated in streams and lake systems
during the early to middle Tertiary.  These sediments were slightly uplifted in
late Pliocene, and the upper parts of the sequence have been exposed by erosion.



A specialist interpretation has been received from modelling of the data
received from the recently completed Hoist EM survey. A total of 126 traverses
were completed on 400m line spacing for collection of 1800 line kilometers. A
Hoistem survey maps the palaeo-topography of the crystalline basement due to
significant electrical contrast between overlying unconsolidated sediments and
the basement rocks.



This interpretation has identified three major palaeo-channels running in an
east-west direction. Several areas have been highlighted which are believed to
contain significant carbonaceous matter, the essential ingredient for the
formation of roll front uranium deposits.



Glossary of geological and technical terms



Ba               The chemical symbol for the element Barium

Biotite          A brown to black magnesium aluminium silicate mineral, common 
                 in most volcanic rocks

Calcrete         Surficial secondary deposit of calcium carbonate

Carbonaceous     Sedimentary units containing carbon 

Ce               The chemical symbol for the element cerium

Cs               The chemical symbol for the element caesium

Epidote          A yellow to green silicate mineral, formed
                 during low grade metamorphism or hydrothermal processes

Epidosite        Rock consisting of epidote and quartz that
                 is metamorphic or hydrothermal in origin

Felsic           Descriptive of light coloured rock containing an abundance of 
                 feldspar (generally Potassium rich) and quartz

Fluvial          Sediment deposited from drainage system

Ga               The chemical symbol for the element gallium

Gneiss           High grade metamorphic rock composed of alternating bands 
                 respectively rich in light and dark coloured minerals

Granite          Light coloured, coarse-grained, intrusive igneous rock; 
                 comprises large sections of the Earth's continental crust

Hoistem          A airborne electromagnetic geophysical survey using a hoist 
                 array

Intrusion        A body of igneous rock that invades older rocks

Lacustrine       Shallow lake environment

Mafic            Descriptive of rocks containing major proportions of magnesium 
                 and iron silicate minerals

Mesoproterozoic  Geological period in time of around 1000 - 1600 my

Mineralisation   The concentration of metals and their minerals
                 within a body of rock

Mineralogy       The science of the study of minerals

Nb               The chemical symbol for the element niobium

Palaeo-channel   Ancient river drainage system

Pb               The chemical symbol for the metallic element lead

Pegmatite        Very coarse-grained igneous intrusive body, usually granitic, 
                 usually in dyke or sill form

Pliocene         Geological period in recent time circa < 5my

ppm              Parts per million

Plagioclase      Plagioclase is an important rock-forming mineral and occurs 
                 widely, primarily in igneous rocks such as basalts

Radiometric      Measurement of radiation.  An airborne radiometric survey may 
                 distinguish different rock units on the basis of their
                 inherent radioactive minerals

Rock Chip 
 Sampling        Systematic collection of rock samples at a series of
                 different locations in order to study the distribution of 
                 rock geochemical values

Roll Front       Style of secondary uranium mineralisation

REE              Rare earth elements

Rb               The chemical symbol for the element rubidium

Scintillometer   Instrument used for measuring radiation

Shear            A zone in which rocks have been deformed,
                 primarily in a ductile manner, as a result of applied stress

Stratigraphic    Correlation of sedimentary or volcanic rock within beds over a 
                 sequence in time

Strontium        Strontium is a rare alkaline-earth metal

Structural       Pertaining to geological structure;
                 including folds, faults, shears, cleavage, and joints. 
                 Structures range from regional scale to microscopic

Ta               The chemical symbol for the element tantalum

Th               The chemical symbol for the element thorium

U                The chemical symbol for the element uranium

Uraninite        The chief ore mineral of uranium. Uraninite
                 has the idealized chemical composition UO2, uranium dioxide. 
                 Thorium and rare earths, chiefly cerium, are usually present in 
                 variable and sometimes large amounts. Lead always is present by 
                 radioactive decay of the thorium and uranium present

Vein             A thin sheet-like intrusion into a fissure or crack, commonly 
                 bearing quartz

Y                The chemical symbol for the element yittrium

Zn               The chemical symbol for the element zinc

Zr               The chemical symbol for the element zirconium



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           + 61 (0)419 954 020       Thor Mining PLC         Chief Executive
CEO                                                                    Officer


John Simpson         020 7512 0191             ARM Corporate Finance   Nominated Adviser
                                               Limited

Leesa Peters         020 7429 6600             Conduit PR Limited      Public Relations/UK

         or

Jos Simson           020 7429 6603

Nicolas Read         + 61 (0) 8 9388 1474      Jan Hope & Partners    Public Relations/
                                                                      Australia




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