August 28, 2008

Trading Symbols: TSX.V:PNL
and O7M � Frankfurt Stock Exchange

Silver Coin Drilling is Continuing - Metallurgical Work Underway

Vancouver , B.C. - Pinnacle Mines and Mountain Boy Minerals announce that drilling is continuing at the Silver Coin property near Stewart, BC and is presently testing areas of mineralization on the Big Missouri claim.  The drilling is defining wide areas of silicification and heavy sulphide encountered along the west side of the previously mined Facecut-35 zone.  This area has never been drill tested.  To date, eighty-six (86) holes are now complete, significantly up from the originally planned 59 holes. As of yesterday, 40,200 feet of core had been logged and cut for assaying.  Notable assays have been received for the first 4 holes (see August 12th news �High Grade Gold Values��) with more expected in the coming weeks.

Metallurgical work is now underway on sample material from the property.  This will help identify the best processing methods to extract the gold and other metals if a mine is developed on the property. This work is expected to be completed in the next 12 weeks.

The 2008 drill program was designed to add precious metals resources and to improve the resource categories already established in a 43-101 compliant resource calculation and technical report on Silver Coin prepared in April 2007. Once the core from this years� program has been assayed, Snowden Engineering Consultants of Vancouver, BC will begin work on an updated 43-101 compliant resource report.

The Silver Coin is a gold-silver-base metal property located about 24 kilometers north of Stewart, British Columbia in the Skeena Mining Division. The Silver Coin project and associated minerals claims is a 51-49% joint venture between Pinnacle Mines and Mountain Boy Minerals except for the Kansas claim which is 29% Mountain Boy and 71% Pinnacle.  

Alex Walus P. Geo. is the qualified person looking after the drill program on behalf of the companies and has reviewed this press release.  Drill core samples are assayed by Assayers Canada of Vancouver, BC.

Pinnacle Mines is a Canadian based mineral exploration and development company with assets in Canada and Mexico. In Canada, Pinnacle holds properties in northwestern British Columbia in proximity to numerous past and producing mines including the Silbak-Premier Mine and Barrick Gold�s famed Eskay Creek Mine. In Mexico, Pinnacle has options to acquire and is currently exploring two copper-gold-silver targets located within the state of Oaxaca.

For further information contact Paul Saxton, President or John Van Duzen at 604-688-7377 or visit Pinnacle�s website at www.pinnaclemines.com ..

On behalf of the Board of Directors
�Paul Saxton�
President & CEO