Bulk Samples From Rocher Deboule’s Artillery Peak Manganese Property to be Tested at Mountain States Research/Development Institute (Vail, AZ)

Added May 28th, 2008 – Vancouver, British Columbia


Mr. Larry W. Reaugh, President & Chief Executive Officer of Rocher Deboule Minerals Corp. (TSX.V: RD; Pink Sheets: RDBHF) (“Rocher” or the “Company”) is pleased to announce the Company has accepted Mountain States Research/Development Institute’s (“Mountain States”) proposal to do test work on bulk samples from Artillery Peak.

Sampling under the supervision of Norm Tribe, P.Eng, is underway and work will start immediately when samples reach Mountain States. Artillery Peak is reported to contain the USA’s largest low grade manganese resource (US Bureau of Mines Report). This critical work will focus on simple hydrometallurgical processes which have shown promise in earlier campaigns.

Mountain States is a successful commercial testing facility known throughout North America and globally for its work. The principal engineer is Dr. Roshan Bhappu who will work in association with Rocher’s engineers. Rocher’s management is confident the demand for manganese, which is a key ingredient in some steels, will continue to expand as the global thirst for steel continues. Currently manganese metal trades at $2.00/lb up considerably from $0.30/lb in 2003. The property was last in production in the 1950’s when the price of manganese was $0.045/lb (Manganese Statistics/Us Geological Survey December 11, 2007).

This press release has been reviewed by John W. Fisher, P. Eng., a qualified person under NI 43-101.

About Rocher Deboule Minerals Corp.

Rocher Deboule Minerals Corp. is a diversified exploration and development company focusing its attention on mineral properties and commodities used in the steel manufacturing industry.
On behalf of Management

ROCHER DEBOULE MINERALS CORP.

Larry W. Reaugh
President and Chief Executive Officer

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