Bear Creek's Santa Ana drilling expands silver mineralization; High-grade structures encountered; Positive silver recovery from column leach testing



    VANCOUVER, Oct. 4 /CNW/ - Bear Creek Mining (TSX Venture: BCM) ("Bear
Creek" or the "Company") is pleased to announce results from seventeen
additional diamond drill holes (3,602 meters). Drilling at Santa Ana now
totals 12,802 meters in eighty-two 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-39A intersects 120m @ 54 g/t Ag, including 10m @
        325 g/t Ag + 3.1% Zn; indicating higher temperatures and potential
        source to the south where mineralization remains open

    -   Drill hole SA-35 intersects 244m @ 30 g/t Ag, including 24m @
        85 g/t Ag.

    -   Drill hole SA-35A intersects 40m @ 182 g/t Ag, including 4m @
        1532 g/t Ag.

    -   Drill hole SA-37A intersects 152m @ 46 g/t Ag, including 8m @
        141 g/t Ag, 24m @ 114 g/t Ag and 4m @ 96 g/t Ag.

    -   Drill hole SA-38A intersects 182m @ 30 g/t Ag, including 8m @
        165 g/t Ag.

    -   Drilling under thin soil cover continues to intersect mineralization,
        including higher-grade structures

    -   Mineralized footprint extends 1.3 km by 750 meters and remains open
        to the north, south and west where both soil and rock sampling grids
        are being expanded.
    

    Andrew Swarthout, President and CEO of Bear Creek, states "We are
extremely pleased that drilling in "blind" covered areas where the deposit
remains open continues to return strongly mineralized intercepts. The long
silver intercepts containing higher-grade structures bode well for a low-cost
heap leach approach. The source for the mineralization has yet to be
identified indicating strong potential for discovering higher grades as the
deposit size is increased laterally and at depth. Santa Ana is on track to
evolve into a large, low-cost, pure silver deposit."
    Drilling results are as follow. All intercepts are down-hole lengths and
true widths have not been calculated.

    
    -------------------------------------------------------------------------
                Azi-  Incli-                             Silver
    Drill       muth  nation  Total               Inter- (grams
    Hole       (deg-  (deg-   Depth   From   To   val(m)  per    Lead   Zinc
    No.         rees)  rees)   (m)    (m)    (m)   DTH   tonne)   (%)    (%)
    -------------------------------------------------------------------------
    SA-33        285    -50   235.3    80    102     22   34.8    0.3    0.6
    -------------------------------------------------------------------------
                                      126    140     14   34.6    0.2    0.5
    -------------------------------------------------------------------------
                                      214    228     14   29.1    0.2    0.2
    -------------------------------------------------------------------------
    SA-33A       105    -50   252.8    96    136     40   17.4    0.1    0.2
    -------------------------------------------------------------------------
    SA-33B       105    -80   130.0    48     60     12   16.0    0.2    0.6
    -------------------------------------------------------------------------
    SA-34        100    -60   197.0     0    186    186   27.1    0.3    0.5
    -------------------------------------------------------------------------
    SA-35        270    -60   257.2     0    244    244   29.5    0.3    0.5
    -------------------------------------------------------------------------
    includes                           82     94     12  122.5    1.0    0.9
    -------------------------------------------------------------------------
    and                               116    140     24   84.9    0.6    1.0
    -------------------------------------------------------------------------
    and                               188    192      4   90.0    0.1    0.1
    -------------------------------------------------------------------------
    SA-35A        90    -60   257.0    44     50      6   35.3    0.2    0.3
    -------------------------------------------------------------------------
                                       58     68     10   30.8    0.2    0.4
    -------------------------------------------------------------------------
                                       98    100      2   78.0    0.6    0.6
    -------------------------------------------------------------------------
                                      130    162     32   36.4    0.2    0.3
    -------------------------------------------------------------------------
                                      180    220     40  182.1    0.4    0.4
    -------------------------------------------------------------------------
    includes                          204    208      4 1532.0    2.4    2.4
    -------------------------------------------------------------------------
    SA-35B       180    -60   242.0     0    100    100   18.8    0.2    0.5
    -------------------------------------------------------------------------
                                      138    210     72   37.8    0.2    0.3
    -------------------------------------------------------------------------
    includes                          184    208     24   65.0    0.3    0.3
    -------------------------------------------------------------------------
    SA-36        300    -60   204.9    14     34     20   46.0    0.2    0.3
    -------------------------------------------------------------------------
                                       52     66     14   39.7    0.5    0.9
    -------------------------------------------------------------------------
                                      138    188     50   34.2    0.2    0.3
    -------------------------------------------------------------------------
    includes                          146    158     12   61.5    0.1    0.2
    -------------------------------------------------------------------------
    SA-36A       120    -60   210.0    10    190    180   17.6    0.1    0.3
    -------------------------------------------------------------------------
    includes                          116    130     14  101.6    0.3    0.3
    -------------------------------------------------------------------------
    SA-36B       180    -60   194.0     6    186    180   20.3    0.2    0.3
    -------------------------------------------------------------------------
    includes                           70    124     54   29.4    0.1    0.3
    -------------------------------------------------------------------------
    and                               154    160      6  144.0    1.3    1.3
    -------------------------------------------------------------------------
    SA-37        270    -60   210.5    46     48      2  100.0    0.6    1.5
    -------------------------------------------------------------------------
                                       66    110     44   32.0    0.2    0.4
    -------------------------------------------------------------------------
    includes                          100    108      8   72.8    0.3    0.6
    -------------------------------------------------------------------------
    SA-37A        90    -70   215.2    42    194    152   45.9    0.4    0.8
    -------------------------------------------------------------------------
    includes                           56     64      8  140.8    1.3    2.0
    -------------------------------------------------------------------------
    and                               130    154     24  114.2    0.6    1.3
    -------------------------------------------------------------------------
    and                               178    182      4   96.0    1.0    1.4
    -------------------------------------------------------------------------
    SA-38        270    -60   161.0    60    126     66   51.8    0.3    0.5
    -------------------------------------------------------------------------
    includes                           78     90     12  138.0    0.6    0.7
    -------------------------------------------------------------------------
    SA-38A        90    -60   224.0    34    216    182   30.3    0.3    0.5
    -------------------------------------------------------------------------
    includes                          180    188      8  164.5    1.3    1.5
    -------------------------------------------------------------------------
    SA-38B       135    -60     200    54     78     24   53.8    0.7    1.1
    -------------------------------------------------------------------------
                                       90    106     16   53.4    1.0    1.8
    -------------------------------------------------------------------------
                                      114    144     30   90.0    0.9    1.7
    -------------------------------------------------------------------------
    SA-39        300    -60   223.0     0     14     14   12.6    0.3    0.3
    -------------------------------------------------------------------------
    and                               104    164     60   14.0    0.1    0.1
    -------------------------------------------------------------------------
    and                               196    214     18   17.5    0.1    0.3
    -------------------------------------------------------------------------
    SA-39A       120    -60     190     0    120    120   53.4    0.7    1.1
    -------------------------------------------------------------------------
    includes                           66     72      6  325.0    1.2    3.1
    -------------------------------------------------------------------------
                                      140    154     14   51.9    0.5    0.3
    -------------------------------------------------------------------------
    

    (Full drill results can be found at www.bearcreekmining.com. To access
the silver drill hole map directly please refer to
http://www.bearcreekmining.com/i/pdf/Santa_Ana_dh_map.pdf)

    These new drill results demonstrate that blind, high-grade structures
within large halos of lower grade heap-leach material continue to be
intersected at Santa Ana (SA-35 and 37A). Given the intersection of these
blind structures under areas of soil cover with no outcrops, grid drilling is
now proceeding with 2 rigs simultaneously testing to the north and south of
the main silver anomaly.
    Data is being assembled that will allow for a resource estimation
anticipated by year-end '07. Rock chip and soil grids are being extended to
the north (1km) and west (250m) and results will be followed up by drilling as
warranted.

    Santa Ana Metallurgy

    Three column heap leach tests in progress at McClelland labs confirm that
the mineralized material responds very well to conventional leaching
techniques. Ultimate recoveries of silver on a heap leach are projected to be
at least 60% for the conventional crushed heap leaching method and at least
70% for the pulp agglomeration method based on preliminary results that
indicate that after 75 days of column leach testing, recoveries are 55% to 58%
of the silver from 3/4-inch crushed material and 68% using a pulp
agglomeration method. The tests are still continuing and silver is still being
leached at satisfactory rates. Column leaching will continue until 90 days, or
effluent levels decrease to below 1 g/t silver, at which time the columns will
be unloaded, screened and assayed, and final recoveries will be determined.
    Importantly, several diagnostic shaker leach tests have been performed on
samples from the new expanded areas recently discovered by drilling and these
mineralized extensions respond similarly to the material used in the column
tests; indicating the silver will be leachable throughout the current deposit
footprint.
    The Company will be initiating a third phase of column testing later in
the year to evaluate the new discovery zones and examine optimal crushing
versus leach recoveries.

    Santa Ana Resource and Engineering

    The Company is now preparing an independent resource estimate which will
include all the holes drilled to date. The resource estimate is being prepared
by Independent Mining Consultants of Tucson, Arizona. The intent is to use
this resource estimate to prepare a Preliminary Economic Assessment of the
deposit and help guide the Company forward on development plans. At this time
the Company will look at a bulk tonnage open pit feeding either a conventional
heap leach or a pulp agglomeration heap leach silver mine.

    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: info@bearcreekmining.com; For further information, please
visit the Company's website (www.bearcreekmining.com)


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