High Grade Gold Values up to 81.57 g/tonne Gold Intersected on the Silver Coin Project with DDH-2008-232 and 233 Extending the P

Trading Symbol: TSX -MTB Frankfurt-M9U.F OTC-MBYMF 


STEWART, BC, Aug. 12  /PRNewswire-FirstCall/ -- Pinnacle Mines Ltd and Mountain Boy Minerals Ltd announce that initial assays for the first four holes of the 2008 drill program on the Silver Coin Project have been received. Two holes, 232 and 233 on the main breccias zone have long intersections of gold mineralization. At present, over 11,000 meters of drilling have been completed in 71 holes, mostly on the Kansas claim with some drilling on the Big Missouri claim. Due to early drill success on the program, drilling has been extended from the initial 10,000 meter program.

Notable assay results from holes 232 and 233 are listed in the table below. The other two holes drilled 400 meters to the northeast of the main breccias zone did not have any notable assays.

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           From     To    Width   Au     Ag      Cu     Pb     Zn    CLAIM
  DDH       (m)     (m)    (m)    g/t    g/t      %      %      %    TESTED
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  2008-
   232     66.45   78.64  12.19  12.66  24.46    0.02   0.30   0.77  Kansas
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  includ-
   ing     69.49   71.02   1.52  81.57    128   0.079   1.29   2.91  Kansas
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  and     106.38  107.29   0.91   1.53    9.7   0.032   0.20   0.43  Kansas
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  2008-
   233     63.09   84.43  21.34  11.29  20.14    0.05   0.40   0.96  Kansas
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  includ-
   ing     69.19   81.38  12.19  18.17  31.58   0.084   0.64   1.45  Kansas
  -------------------------------------------------------------------------
  and      99.67  105.46   5.79   3.91   5.74    0.01  0.033  0.096  Kansas
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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.

A NI 43-101 report dated May 1, 2007 by MineFill Services Inc. indicates that the property has 488,202 gold equivalent (Au-Ag) ounces in the measured and indicated category as well as 1,000,499 gold equivalent ounces in the inferred category. The 2008 drill program is designed to add precious metal resources and to improve the resource categories already established in the 43-101 compliant resource calculation and technical report.

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

Mountain Boy Minerals Ltd is a Canadian based mineral exploration company whose activities are in the Stewart and McKenzie area of BC. It is actively exploring for gold-silver-base metals on the Silver Coin project, silver-base metals on their American Creek properties, copper-gold in the Stewart area, porphyry molybdenum in the Stewart and McKenzie areas and copper-nickel-platinum group metals in the McKenzie area.

  ON BEHALF OF THE BOARD

  "Ed Kruchkowski"

  Ed Kruchkowski, Director


DATASOURCE: Mountain Boy Minerals Ltd.



CONTACT:  John Thornton at [phone] or Ed Kruchkowski at (250)

636-9232 or visit the website at http://www.mountainboyminerals.ca/

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