Interim Resource Estimate For Copper Mountain Project Exceeds Expectations

    TSX.V: CUM

    VANCOUVER, Sept. 6 /CNW/ - Copper Mountain Mining Corporation ("CMMC" or
the "Company) announces that the resources have significantly increased from
the previously reported historical resources at the Copper Mountain Mine Site.
Highlights of this new NI 43-101 compliant, resource report are:

    -  Measured and Indicated resources, based on a 0.2% Cu cut-off grade,
       are 227.5 million tons grading 0.37% Cu containing 1.7 billion pounds
       of copper.

    -  Inferred resources at 0.2% Cu cut-off grade are 197.2 million tons
       grading 0.31% Cu containing 1.2 billion pounds of copper.

    -  Gold and silver grades were not reported on because these were not
       available with the historical drill data but historical production
       records indicate that approximately 12% of the concentrate value was
       from silver and gold credits and data from the current exploration
       program suggests that future production will have similar credits.

    Jim O'Rourke, President and CEO, stated, "This interim resource estimate
incorporates data from over 4,400 historical drill holes and 84 strategically
placed new drill holes from the current 2007 exploration program. We are
calling this an interim resource estimate because we have only completed 55%
of our 51,000 meter program for 2007 and the deposit is still open in most
    Mr. O'Rourke continued, "additional growth of the Copper Mountain
Resource is anticipated and exploration will be a primary focus on this 18,000
acre site that has numerous identified mineralized areas that warrant further
drill programs. In the near term the project focus will shift to upgrading the
inferred resources to measured and indicated categories as well as confirming
metallurgical performance and optimizing the project development concepts. I
think this property possesses a unique combination of near term production
potential and exploration blue-sky."
    The resource estimated was prepared by Giroux Consultants Ltd. of
Vancouver British Columbia, an independent qualified person as defined by
Canada's National Instrument 43-101. Methods used in determining and reporting
the resources are consistent with CIM Best Practices Guidelines for the
estimation of mineral resources and mineral reserves.

       Measured Plus Indicated Resource               Inferred Resource
    ---------------------------------------   -------------------------------
                               Contained                         Contained
    Cut-off  Tonnage            Copper        Tonnage              Copper
    %Cu      (000's)  Grade      (lbs)        (000's)  Grade        (lbs)
    ---------------------------------------   -------------------------------
    0.15    318,000   0.31   1,990,700,000    341,600   0.25   1,701,200,000
    ---------------------------------------   -------------------------------
    0.20    227,500   0.37   1,679,000,000    197,200   0.31   1,202,900,000
    ---------------------------------------   -------------------------------
    0.25    163,100   0.43   1,389,600,000    113,600   0.37     833,800,000
    ---------------------------------------   -------------------------------
    0.30    118,600   0.48   1,145,700,000    69,900    0.43     595,500,000
    ---------------------------------------   -------------------------------

    The resource estimated is based on data from more than 155,000 assays
from 4,400 historical drill holes, 67 drill holes from 1997 and 84 new diamond
drill holes from the Company's 2007 drill results up to July 20, 2007.
Historical drilling was validated by comparison to production records and
comparison to new drilling. All data was compiled into a single database but
seven domains were sub-divided on the basis of location and different
orientations of the structural controls as determined by geology and
experimental variography. All historical data was used during resource
estimation but historically mined out areas were then removed from the block
model. Block size was 25 feet by 25 feet by a 40 foot bench height. Block
grade interpolation was a combination of ordinary kriging for lower grade,
commonly disseminated mineralization, and indicator kriging for higher grade
vein-like mineralization. High grade assays were capped prior to estimation
based on a statistical review of the data. Drilling is continuing at the
property to upgrade the inferred resources and test other known mineralized
areas to possibly expand the resource.
    A majority of the reported resources, particularly the measured and
indicated occur adjacent to, and between the historical open pits known as Pit
1, Pit 2 and Pit 3. Outlying exploration areas such as Alabama, Virginia,
Orinoco and Mill zones predominately contain resources within the inferred
category. Copper Mountain continues to explore the project with two drill rigs
and expects to be up to four drill rigs by early October. This resource
estimate reported on herein, will form the basis for the Preliminary Economic
Assessment (PEA) which is expected to be released in the third quarter of this
year. The PEA will allow the company to better target drilling by determining
which areas contribute most to project economics as well as providing data for
pre-feasibility and/or feasibility studies which are anticipated to be
initiated in the near future but based on the PEA results. Additionally, the
Company has engaged the services of Quantec Geophysics to conduct a deep
penetration IP (Titan 24) survey latter this month. This survey is being
carried out to determine potential for both; additional near surface
mineralization and deep higher-grade porphyry copper mineralization.

    Quality Assurance
    The company employs a system of quality control for drill results which
includes the use of blanks, certified reference material (standards) and check
assaying. Core is logged on site and split with a diamond saw. Samples are
shipped to Pioneer Laboratories for geochemical analysis of copper with all
values of greater than 1000 ppm copper being re-analysed by assay methods for
copper, gold and silver. The drilling program is being supervised by Peter
Holbek, M.Sc., P.Geo., a qualified person as defined by National Policy
Instrument 43-101.

    About Copper Mountain Mining Corp.:
    CMMC is a new public BC resource company. The Company owns 100% of
Similco Mines Ltd which holds the mineral claims and crown grants over the
18,000 acre Similco Mine site, located 15 km south of the town of Princeton in
southern British Columbia. Copper Mountain Mining Corp. has the goal of
verifying and expanding the historical resources of the Copper Mountain
project, as documented in a 43-101 technical report recently filled on SEDAR.
Additional information is available on the Company's web page at

    On behalf of the Board of

    "Peter Holbek"

    Peter Holbek
    VP Explorations

    Note: This release contains forward-looking statements that involve risks
and uncertainties. These statements may differ materially from actual future
events or results. Readers are referred to the documents, filed by the Company
on SEDAR at, specifically the most recent reports which identify
important risk factors that could cause actual results to differ from those
contained in the forward-looking statements. The Company undertakes no
obligation to review or confirm analysts' expectations or estimates or to
release publicly any revisions to any forward-looking statements.

    %SEDAR: 00025279E

For further information:

For further information: Don Graham, Director Investor Relations, (604)
682-2992 ext. 224 for further information or B&D Capital (604) 685-6465

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