Thundermin Resources Inc.
TSX : THR

Thundermin Resources Inc.

August 21, 2009 08:00 ET

Thundermin and Cornerstone File NI 43-101 Technical Report on SEDAR in Support of the Little Deer Mineral Resource Estimate

TORONTO, ONTARIO--(Marketwire - Aug. 21, 2009) - Thundermin Resources Inc. ("Thundermin") (TSX:THR) and 50% joint venture partner Cornerstone Resources Inc. ("Cornerstone") (TSX VENTURE:CGP) announce that a National Instrument 43-101 ("NI 43-101") Technical Report, to support the mineral resource estimate for the Little Deer Copper Deposit ("Deposit") that was announced on July 7, 2009, has been filed on SEDAR and posted on each company's respective website.

The Mineral Resource Estimate and the Technical Report entitled "Technical Report on the Initial Mineral Resource Estimate for the Little Deer Copper Deposit, Newfoundland, Canada, August 14, 2009" were prepared by Mr. Reno Pressacco, M.Sc.(A), P.Geo., Senior Geologist with Micon International Limited ("Micon") of Toronto, Ontario and an independent Qualified Person ("QP") in accordance with NI 43-101.

As reported on July 7, 2009, Micon estimated that the Deposit contains Inferred Resources of 1,087,000 tonnes at an average grade of 2.9% Cu and Inferred Resources of 1,950,000 tonnes at an average grade of 2.3% Cu.

The Little Deer copper property is located approximately 10 km north of Springdale in north-central Newfoundland. To date, the Deposit has been outlined to varying degrees of detail over a strike length of approximately 1,050 m and to a vertical depth of approximately 895 m. The Deposit remains open to the east, west and at depth and the potential for discovery of additional mineral resources is believed to be high.

A $900,000 diamond drilling program, announced on February 25, 2009 for the first half of 2009, was completed at the end of July 2009. Four holes from this program, which were not included in the Mineral Resource Report, have been completed and the results for these holes will be announced once all of the assay data has been received and analyzed.

It is anticipated that the next diamond drilling program on the Deposit will commence in September 2009. This program will be designed to expand on the mineral resources discovered to date and to upgrade the Inferred Resources to the Indicated Resource category. The details of this program will be announced once it has been finalized.

About Thundermin

Thundermin is a Canadian-based mineral exploration company focused on the exploration for and the discovery of economically viable base metal and gold deposits in Canada. Thundermin has an interest in, or the right to earn an interest in 11 base metal and gold properties in Canada.

Thundermin also has royalty interests in a further 28 base metal and gold properties located in Manitoba, Saskatchewan, British Columbia and Quebec, the most significant being a 2.5% net smelter return royalty in the Pelletier Lake gold deposit that is currently the focus of underground work by Alexis Minerals Corporation. Thundermin also has various shareholdings in thirteen other junior resource companies that are actively exploring for base metals, gold and diamonds in Canada.

Forward-Looking Statements

This news release may contain "Forward-Looking Statements" that involve risks and uncertainties, such as statements of Thundermin's plans, objectives, strategies, intentions and expectations. The words "potential," "anticipate," "forecast," "believe," "estimate," "expect," "may," "project," "plan," and similar expressions are intended to be among the statements that identify "Forward-Looking Statements". Although Thundermin believes that its expectations reflected in these "Forward-Looking Statements" are reasonable, such statements may involve unknown risks, uncertainties and other factors disclosed in our regulatory filings that can be viewed on the SEDAR website at www.sedar.com. For us, uncertainties arise from the behaviour of financial and metals markets and from numerous other matters of national, regional, and global scale, including those of an environmental, climatic, natural, political, economic, business, competitive, or regulatory nature. These uncertainties may cause our actual future results to be materially different than those expressed in our "Forward-Looking Statements". Although Thundermin believes the facts and information contained in this news release to be as correct and current as possible, Thundermin does not warrant or make any representation as to the accuracy, validity or completeness of any facts or information contained herein and these statements should not be relied upon as representing its views subsequent to the date of this news release.

For further information on Thundermin Resources Inc. please visit Thundermin's website at www.thundermin.com or the SEDAR website at www.sedar.com.

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