Thundermin Resources Inc.

Thundermin Resources Inc.

July 09, 2007 16:35 ET

Thundermin and Cornerstone Commence Drill Program on the Little Deer Copper Deposit, Newfoundland

TORONTO, ONTARIO--(Marketwire - July 9, 2007) - Thundermin Resources Inc. ("Thundermin") (TSX:THR) and partner Cornerstone Resources Inc. ("Cornerstone") (TSX VENTURE:CGP) announce that an $850,000 diamond drill program consisting of approximately 5,300 metres of drilling in 8-9 holes has commenced on the Little Deer copper deposit which is located approximately 10 kms north of Springdale in north-central Newfoundland.

The purpose of the drill program is to confirm and increase the copper resources outlined by wide-spaced historical holes both at depth and along strike. The first hole of this program will be collared to intersect the copper mineralization 100 m east of hole LD-00-12 and approximately 150 metres west of hole LD-98-07 at a vertical depth of approximately 550 m (see accompanying map).

The results of historical diamond drilling undertaken on the Little Deer deposit, in the 1960's by British Newfoundland Exploration Company ("BRINEX") and from 1998 to 2000 by Mutapa Gold Corp., suggest that there is the potential to outline a significant resource of economic grade copper mineralization below and along strike from where shallow mining was undertaken in the early 1970's by BRINEX and Green Bay Mining Company. Thirteen historical drill holes containing significant copper mineralization over mineable widths occur below the old mine workings over a distance of 600 m, from approximately 250 m to 600 m below surface. Four of these holes, LD-98-08 (1.6% Cu over 38.7 m, including 2.5% Cu over 8.3 m), LD-98-04 (4.3% Cu over 9.6 m), LD-98-07 (2.9% Cu over 5.8 m) and LD-00-12 (3.8% Cu over 10.7 m), occur from east to west over a distance of approximately 450 m on the 550 m elevation. Other significant intersections below the old workings include LD-98-01 (5.2% Cu over 2.1 m), LD-98-02 (3.0% Cu over 7.3 m), LD-98-03 (3.1% Cu over 12.9 m), LD-98-05 (2.3% Cu over 8.2 m), LD-66-135 (3.5% Cu over 8.0 m), LD-66-136 (1.9% Cu over 6.2 m) and LD-67-143 (5.8% Cu over 1.5 m). Hole LD-00-12 is the farthest west hole drilled to date, except for a few shallow holes drilled by BRINEX in 1966.

Thundermin and Cornerstone have the option, on a 50/50 basis with Thundermin as operator, to earn a 100% interest in the Little Deer copper deposit and adjacent property from Weyburn Investments Ltd. ("Weyburn"). Details of the terms of the agreement with Weyburn and the results of historical exploration programs undertaken on the Little Deer copper deposit are contained in news releases issued by Thundermin and Cornerstone dated May 1 and June 21, 2007. This information can also be found on Thundermin's and Cornerstone's respective websites at and

Mr. Andrew Hussey, P.Geo., Project Geologist and Lands Manager, Cornerstone Resources Inc., is the qualified person that will be responsible for planning and carrying out the drilling program on the property.

For further information on Thundermin Resources Inc. visit Thundermin's website at or the SEDAR website at

To view a drilling map for the Little Deer project, please visit the following link:

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