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 Potential Resource Area a Further 80 Meters South of the Presently Outlined Resource

    Trading Symbol: TSX -MTB

    STEWART, BC, Aug. 12 /CNW/ - 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.

             From     To    Width   Au     Ag      Cu     Pb     Zn    CLAIM
    DDH       (m)     (m)    (m)    g/t    g/t      %      %      %    TESTED

     232     66.45   78.64  12.19  12.66  24.46    0.02   0.30   0.77  Kansas
     ing     69.49   71.02   1.52  81.57    128   0.079   1.29   2.91  Kansas
    and     106.38  107.29   0.91   1.53    9.7   0.032   0.20   0.43  Kansas

     233     63.09   84.43  21.34  11.29  20.14    0.05   0.40   0.96  Kansas
     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

    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.


    "Ed Kruchkowski"

    Ed Kruchkowski, Director

    %SEDAR: 00013756E

For further information:

For further information: John Thornton at (778) 855-7823 or Ed
Kruchkowski at (250) 636-9232 or visit the website at

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