Bear Creek Drilling expands silver mineralization on its 100% owned Santa Ana Project, Peru

    VANCOUVER, Aug. 7 /CNW/ - Bear Creek Mining (TSX Venture: BCM) ("Bear
Creek" or the "Company") is pleased to announce results from ten additional
diamond drill holes, including the first five holes located in one of several
untested soil covered anomalies. Mineralization is extended by 300 meters
north of previously reported intercepts and remains open. Drilling at Santa
Ana now totals 9,200 meters in sixty-five drill holes. Santa Ana is located
200 kilometers south of the Company's world class Corani silver-base metal
deposit in southeastern Peru. Highlights of this press release include:

    -   Drill hole SA-29 intersects 68m @ 38 g/t Ag and 18 m @
        218 g/t Ag.
    -   Drill hole SA-29A intersects 66m @ 66 g/t Ag, including 16 m @
        120 g/t Ag and 6m @ 286 g/t Ag.
    -   Drill hole SA-30 intersects 30m @ 103 g/t Ag, including 10 m @
        145 g/t Ag.
    -   Drill hole SA-31 intersects 118m @ 37g/t Ag, including 36m @
        81g/t Ag.
    -   Drill hole SA-32A intersects 70m @ 48.3g/t Ag, including 32m @
    -   Mineralized footprint now extends 1.3 km by 750 meters, an increase
        of 30%, and mineralization still open with very strong vectors for
        expansion and higher grades.

    Andrew Swarthout, President and CEO of Bear Creek, states "The drill
results strongly confirm that the silver anomalies in soil over covered areas
on three sides of the deposit indicate substantial potential for the expansion
of the mineralized areas. Additionally, the continued higher grade silver
intercepts within long intervals of lower grade mineralization supports our
concept of treating the mineralization using a pulp agglomeration treatment
method. This method utilizes vat leaching of higher grade material with
accelerated recoveries followed by heap leaching for more moderate grade
material. This conventional technology can produce silver dore on-site at very
low cash costs with anticipated recoveries very likely to be greater than
    Mr. Swarthout continues "We are very pleased to be steadily advancing
towards the first resource estimate on this discovery expected to be completed
by years-end. As target areas continue to open up, a second drill has been
contracted for August 2007."
    Drilling results are as follow. All intercepts are down-hole lengths and
true widths have not been calculated.

    Drill       Azi-  Incli-  Total               Inter- (grams
    Hole        muth  nation  Depth   From    To  val(m)   per   Lead   Zinc
    No.        (deg-  (deg-    (m)    (m)    (m)   DTH   tonne)   (%)    (%)
                rees)  rees)
    SA-29        270    -50    218     44    112     68   38.4    0.2    0.6
    includes                           80    104     24   73.2    0.3    0.7
                                      150    168     18  218.1    0.5    0.7
                                      200    206      6   37.7    2.0    1.0
    SA-29A        90    -45    166      2     68     66   66.4    0.2    0.5
    includes                           24     40     16  119.5    0.4    1.0
    and                                60     66      6  286.3    0.2    0.1
    SA-29B        90    -75    173     34     48     14   27.0    0.2    0.5
                                       66    150     84   35.9    0.2    0.5
    includes                           68     72      4   82.5    0.4    1.0
    and                                88    102     14   82.4    0.2    0.4
    SA-30        270    -40    185     18     30     12   59.0    0.2    0.3
                                       64     94     30  102.5    0.4    0.8
    includes                           70     80     10  145.2    0.4    0.9
    and                                86     94      8  153.0    0.6    1.1
                                      124    152     28   48.4    0.3    0.6
    includes                          124    130      6   77.0    0.1    0.3
    SA-30A        90    -60     53    No significant intervals - basal
                                            sediments at 32m depth
    SA-31        280    -40    213     62    180    118   37.2    0.2    0.4
    includes                           62     98     36   81.3    0.3    0.4
    and                               116    120      4   97.0    0.2    0.2
    and                               158    160      2  180.0    0.6    1.0
    SA-31A       100    -60    141      4     94     90   24.9    0.1    0.2
    includes                           86     92      6   83.7    0.3    0.3
    SA-32        285    -50    191      0     68     68   18.8    0.2    0.4
                                      110    120     10   19.0    0.4    0.9
                                      162    182     20   20.7    0.4    0.7
    SA-32A       105    -60    156     32    102     70   48.3    0.5    0.8
    includes                           58     90     32   76.1    0.8    1.1
    SA-32B       105    -80    202      0     72     72   17.4    0.2    0.4
                                      104    134     30   23.1    0.4    0.7

    (Full drill results can be found at To access
the silver drill hole map directly please refer to

    Importantly, the drill results from the SA-29 and SA-30 series, located
125 to 250 meters north of SA-22 (previously, the farthest north drill hole)
confirm that soil/rock grid sampling is an effective tool to both expand the
mineralized areas and define additional targets under shallow cover. Drill
hole SA-31 extends the strike length of the NW Breccia zone an additional 75m
to the south and hole SA-32A continues to demonstrate the potential for
intersecting blind, high grade structures in the center of the mineralized
    The second drill being added to the project will allow exploration of new
targets plus in-fill drilling to extend the limits of mineralization and
provide data for a resource estimation. Drilling will continue to step out to
the north beyond the mineralization identified by drill holes SA-29/30.
Drilling is also planned in the untested soil and rock anomalies extending
250m to the south and 200m west of the current drilled area.

    Metallurgical Testing - Second phase test program involving three column
leach tests has been initiated at McClelland Labs in Sparks Nevada, to
evaluate the amenability of the Santa Ana material to standard heap leaching
methods. The results of the second phase of testing are anticipated to be
completed within the next two to three months, given the long-term nature of
these ongoing column tests. The first phase of metallurgical testing, which
involved cyanide leach tests of 10 samples selected from all areas of known
silver mineralization (including both low and high grade ranges), has shown
that silver recovery can be expected to be 85% with crush sizes of 50% passing
200 mesh and 71% at 70% passing 2mm. The initial results from the early
bottle-roll test work show that the silver mineralization leaches well at 3/4
inch crush sizes, a standard heap leach crush size.
    Standard heap leaching processing methods will likely be the best option
for the lower grade portions of the Santa Ana deposit but it is anticipated
that milling may be used for the higher- grade silver mineralization
encountered in the current phase of drilling. Both the mill products and the
crushed heap leach material will ultimately be combined on the heap leach pad,
in a processing method know as pulp agglomeration. At this time Bear Creek
anticipates the potential combined leach recovery of silver will be
approximately 70%; with up to 85% recovery expected with grinding of the
higher grade silver mineralization.

    Independent 43-101 Report- The Company is also pleased to report that it
has filed on SEDAR a technical report titled Property Report for the Santa Ana
Project, by Mike McClave dated July 2, 2007. The report summarizes the
Company's public disclosure, including geologic information, drill results,
and QA/QC programs and is authored by Independent Qualified Persons as defined
by NI 43-101.

    The TSX Venture Exchange does not accept responsibility for the adequacy
    or accuracy of this release.

    Regulatory footnotes:

    All of Bear Creek's exploration programs and pertinent disclosure of a
technical or scientific nature are prepared by or prepared under the direct
supervision of David Volkert, P.Geo., Bear Creek's Vice President of
Exploration and/or Marc Leduc, P. Eng., Vice President of Technical Services
and the President and CEO, Andrew Swarthout, P.Geo., who serve as the
Qualified Persons under the definitions of NI 43-101. All diamond drilling has
been performed using HQ diameter core with recoveries averaging greater than
95%. Core is logged and split on site under the supervision of Bear Creek
geologists. Sampling is done on two-meter intervals and samples are
transported by Company staff to Juliaca, Peru for direct shipping to ALS
Chemex, Laboratories in Lima, Peru. ALS Chemex is an ISO 9001:2000-registered
laboratory and is preparing for ISO 17025 certification. Silver, lead, and
zinc assays utilize a multi-acid digestion with atomic absorption ("ore-grade
assay method"). The QC/QA program includes the insertion every 20th sample of
known standards prepared by SGS Laboratories, Lima. A section in Bear Creek's
website is dedicated to sampling, assay and quality control procedures.

    Certain disclosure in this release, including management's assessment of
Bear Creek's plans and projects, constitutes forward-looking statements that
are subject to numerous risks, uncertainties and other factors relating to
Bear Creek's operation as a mineral exploration company that may cause future
results to differ materially from those expressed or implied in such
forward-looking statements. (*)Any reference to the potential quantity & grade
of mineralization at Corani is conceptual in nature, there has been
insufficient exploration to define a mineral resource on the property and it
is uncertain if further exploration will result in discovery of a mineral
resource on the property. Readers are cautioned not to place undue reliance on
forward-looking statements. Bear Creek expressly disclaims any intention or
obligation to update or revise any forward-looking statements whether as a
result of new information, future events or otherwise.

For further information:

For further information: Andrew Swarthout - President and CEO, or
Patrick De Witt - Investor Relations, Phone: (604) 685-6269, Direct: (604)
628-1111, E-mail:; For further information, please
visit the Company's website (

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