Polar Star Files NI 43-101 Report on Chépica Copper/Gold Project in Chile



    
    /NOT FOR DISTRIBUTION TO UNITED STATES WIRE SERVICES OR DISSEMINATION IN
    THE UNITED STATES/
    

    TORONTO, June 18, 2009 /CNW/ - Polar Star Mining Corporation (TSX-V: PSR)
("Polar Star" or the "Company") is pleased to report it has completed the
Technical Report on its Chépica copper/gold project in Chile.
    As announced on May 21, 2009, the Company together with SRK Consulting of
Santiago Chile have refined the geostatistical parameters of the resource
model presented in the draft received in April. The main difference being the
change from one generalized search ellipsoid in the April draft to two
sub-ellipsoids orientated parallel to the strike of both sections of the
Chépica Number 1 Vein system. The Company has now filed the NI 43-101
compliant Technical Report on SEDAR.

    
    Highlights of the report

    -   Total Measured and Indicated Resources of the Chépica Number 1 Vein
        system are 178,000 tonnes grading 4.1 grams/tonne gold,
        9.5 grams/tonne silver and 0.51% copper using an un-capped cut-off
        grade of 1.3 grams/tonne gold.

    -   The current Chépica plant should allow for processing at the designed
        capacity of 120 tons/day of sulphide ore. Operating costs of US$8/ton
        are in keeping with the design and size of the plant.

    -   SRK Consulting is of the opinion that there are excellent exploration
        opportunities at Chépica to expand the current size of the copper-
        gold project.

    Chépica Copper-Gold Project Mineral Resource Statement

    As of May 8, 2009

    Resource
    Classification(*)      Tonnage          Gold        Silver        Copper
    -----------------  ------------  ------------  ------------  ------------
                       (kilotonnes)         (g/t)         (g/t)           (%)
    Measured                    85           4.0           9.4          0.50
    Indicated                   93           4.2           9.5          0.52
                       ------------  ------------  ------------  ------------
                               178

    Inferred                    41           4.0           8.7          0.52

    (*) reported at a cut-off of 1.30 g/t gold, not capped
    

    A resource cut-off of 1.3 grams per tonne of gold was applied to the
resource based on experience with the mill on site at Chépica and other
operations in the region, and the Company considers that 1.3 grams per tonne
is an appropriate indication of commercial viability.
    Estimation was based on 50 of 66 drill holes corresponding to 5,299
metres of diamond core drilling, together with 17 underground channel samples
and two trench samples totalling 92.5 metres in length.
    The resources were estimated by Ordinary Kriging using block model sizes
of 2.5 by 2.5 by 5 metres.

    Qualified Person

    The qualified person within the meaning of National Instrument 43-101 is
Mr. Terence Walker, M.Sc., P.Geo. Mr. Walker has reviewed the contents of this
news release.

    Forward-Looking Statements

    This press release may contain forward-looking statements based on
assumptions, uncertainties and management's best estimates of future events.
Actual events or results could differ materially from the Company's
expectations and projections. Investors are cautioned that forward-looking
statements involve risks and uncertainties. Accordingly, readers should not
place undue reliance on forward-looking statements. When used herein, words
such as "anticipate", "will", "intend" and similar expressions are intended to
identify forward-looking statements. For a more detailed discussion of such
risks and other factors that could cause actual results to differ materially
from those expressed or implied by such forward-looking statements, refer to
Polar Star Mining Corporation's filings with Canadian securities regulators
available on www.sedar.com or the Company's website at
www.polarstarmining.com.

    About Polar Star Mining Corporation

    Polar Star Mining Corporation (TSXV: PSR) is an emerging exploration
company with a focus on building value in Chile through discovery and
development. The company has 155,481 hectares covering 22 properties including
gold, copper-gold and uranium.

    
    Neither TSX Venture Exchange nor its Regulation Services Provider (as
    that term is defined in the policies of the TSX Venture Exchange) accepts
    responsibility for the adequacy or accuracy of this release.

    Share Capitalization:
    Shares outstanding: 59,681,241 as at June 18, 2009.
    





For further information:

For further information: Douglas Willock, President and CEO, Polar Star
Mining Corporation, (416) 368-3496, info@polarstarmining.com

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