Bear Creek Corani Project; Metallurgical Update



    VANCOUVER, Oct. 3 /CNW/ - Bear Creek Mining (TSX Venture: BCM) ("Bear
Creek" or the "Company") is pleased to provide a metallurgical testing update
on its Corani Silver-Lead-Zinc deposit in Peru, including several positive
breakthroughs that will lead to definition of the final flow sheet for
processing Corani ore. Metallurgical testing will continue through project
development stages, along with ongoing drilling and resource updates. The
fourth resource estimate for the Corani Project is expected by year-end 2007.
    Andrew T. Swarthout, President/CEO of Bear Creek reports, "Recent testing
has led to important advances in defining the final process flow sheet for the
Corani deposit. These testing results indicate that the separation of lead and
zinc into distinct concentrates is achievable. This is an important advance in
indicating the robust economic viability of the Corani silver-base metals
deposit. This advanced testing protocol is now being applied to a broader
array of composite samples in order to define the anticipated metals
recoveries over the entire ore body including the different types of
mineralized material. Importantly, the recent results demonstrate that
recoveries on the order of 80% for silver and 60% for zinc and lead can be
achieved utilizing conventional process technologies."

    Recent test work at SGS Vancouver Metallurgy has achieved three
significant milestones:

    
    -   A large proportion of non-sulfide gangue minerals (silicate minerals
        with no value) have been eliminated without significant silver
        losses, and;
    -   A large part of the pyrite component has been removed without
        significant metal loss. This is an important metallurgical advantage
        for complex poly-metallic silver deposits.
    -   Lead and zinc have been separated into distinct concentrates. Lead
        concentrates produced in testing are of a commercial grade and
        further work is planned to improve the grade of zinc concentrates
        which we believe can be accomplished. Further work will also be done
        to increase the silver reporting to the lead concentrates.
    

    These advances are very encouraging as they increase the value of the
pre-concentrate material by reducing the amount of material containing no
metal value by as much as 95% before separating lead and zinc into separate
concentrates. They also significantly reduce the amount of material to be
potentially treated through cyanide leaching of tailings streams. This is an
opportunity to increase silver recoveries and produce silver dore at a lower
cost. Lead and zinc separation is now being produced from this improved
pre-concentrate and optimization is expected to increase the silver in the
lead  concentrates in order to improve payable silver conditions. In summary,
the recent advances in pre-concentrate cleaning are expected to produce
salable concentrates with recoveries in the range of original expectations.
    Mr. Swarthout continues, "Additional testing is necessary to further
optimize these results, confirm the anticipated recoveries and accurately
predict concentrate and silver dore products for completion of feasibility
studies. With this advanced testing protocol, we will move aggressively
through the next phase of testing by utilizing three laboratories. Although
this is a typical investigative path for poly-metallic deposits, where testing
and optimization continue through feasibility, construction, and even into the
operating phases of the mine; testing delays continue to be our frustration as
labs are stretched to their limits and turn-around times are lengthening. 
Nevertheless, we are very pleased with our progress and believe the results
confirm our opinion that Corani can be developed into a world-class silver
base metal mine. Our next phase of testing will focus on increasing the silver
reporting to the lead concentrates, improving concentrate grades and testing
of leaching of the tailings stream."
    It is important to note that the resource block model (see news release 6
Dec '06) shows that, at a 1% cut off grade, the mineable zinc averages 1.88%
and occurs within discrete bodies which make up only 14% of the total resource
volume. The remaining resource volume averages 0.17% zinc, which may not be
economically recoverable. Therefore, lead-zinc separation improvement has more
impact on latter mine-life years. The economics of the Corani resource are
more sensitive to production of lead-silver concentrates and silver leaching;
both of which have shown positive results.

    G&T Laboratories program-  Testing of seventy-one composite samples
distributed throughout the deposits is in progress and scheduled to be
completed by mid October. These tests will utilize the now demonstrated
testing protocol for gangue-mineral and pyrite rejection prior to splitting of
lead (silver) and zinc. Cyanide leaching opportunities for increasing silver
recoveries, particularly in "oxidized" portions of the ore bodies will also be
evaluated. This testing will provide metallurgical response guidance over a
broader distribution of the ore body thereby providing data crucial for mine
planning and the eventual conversion of resources to mineable reserves.
    "Metallurgical testing will continue for further optimization for
feasibility purposes", Swarthout adds. "Twelve diamond drill holes are
currently being drilled in the hearts of the Corani deposits to define
open-pit bottoms. These drill holes will serve to convert resources to
reserves for the pre-feasibility study in 2008; however, they have the added
advantage of quickly supplying additional metallurgical sample material from
the higher-grade mineralization expected to be mined during the critical early
years of mine-life. It is unique for a "junior" company to focus such effort
on ore-body modeling and process development; however, we believe that this
attention towards defining the design criteria is important in order to
demonstrate the ultimate value of Corani."

    Resources and Engineering- 120 drill holes completed since the Dec '06
resource estimate are currently being added to the block model by Independent
Mining Consultants, Tucson, Arizona. The fourth resource estimate, anticipated
by year-end '07, is expected to again convert significant amounts of Inferred
resources to the Measured and Indicated categories. The updated resource
estimate and metallurgical test results will be incorporated into a scoping
study (Preliminary Economic Assessment) by Q1 '08, followed immediately by the
commencement of a Pre-feasibility Study.

    Additional Drill Results-  Drill results for twenty-four exploration
diamond drill holes are included in the attached table
(http://www.bearcreekmining.com/i/pdf/2007-10-03_CDR.pdf). Eight drill holes
are located outside of the current resource limits at Corani Este, Minas
Corani and Main Corani and largely define pit limits. The drilling indicates
that resource expansion is likely north of Corani Este and the Corani
Este-Minas Corani connector; however, the thickness of the post-mineral tuff
will force these resources into the latter years of mine life. Sixteen are
exploration holes in the La Curva and Gold target areas. At the Gold target,
intercepts range from 6 m to 12 m returning 1.3 g/t to 2.5 g/t gold, extending
the footprint of quartz-gold (silver) veining an additional 200 meters into
the foot-wall of the main structure. At La Curva, four of ten drill holes
intersected mineralization including 16 m averaging 104.0 g/t Ag (C-230A).
Bear Creek is encouraged that the La Curva target hosts mineralization of
potentially ore-grade tenor; however, to date it has been intersected at too
deep a level to be incorporated currently into the resource model. Exploration
drilling will resume on the various exploration targets in the largely
unexplored district, including La Curva, upon completion of the pit-limit,
in-fill drilling.

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

    Regulatory footnotes:

    All of Bear Creek's engineering programs and pertinent disclosure of a
technical or scientific nature are prepared by or prepared under the direct
supervision of Marc Leduc, P.Eng. Bear Creek's Vice President of Technical
Services, who serves as the qualified person (QP) under the definitions of
National Instrument 43-101.

    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 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; or please visit the Company's
website (www.bearcreekmining.com)


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