Marathon drilling discovers mineralization outside of resource open pit, 8 m of 7.86 g/t PGM and gold and 0.42% copper

    TORONTO, June 28 /CNW Telbec/ - Marathon PGM Corporation (MAR:TSX)
("Marathon" or the "Company") is pleased to announce the latest results from
the 2007 drilling campaign at the Marathon PGM-Cu project, located 8 km
northwest of Marathon, Ontario. Drilling is underway in two locations -- the
southern end of the Main Zone and the area north of the Malachite Zone.
Drilling intersected wide widths of mineralization in multiple holes, which
are located outside of the existing resource pit. Because of this, the
potential to increase the size of the resource is very good.

    Please click the following URL to see the map:

    David Good, VP of Exploration, stated "The goal of adding tonnes and
ounces to the resource by exploring the Main Zone and W Horizon is proceeding
as planned, with very favourable results."

    Main Zone Drilling

    Results from drilling at the Main Zone continue to be very encouraging,
with the best intersection being 1.0 g/t PGM and gold and 0.22% copper over
68 m, including an interval of 2.33 g/t PGM and gold and 0.38% copper over
20 m. All of the intersections in the Main Zone have the potential to extend
the resource to the west and down-dip.
    Drilling in 2007 to date has revealed that the dip of the mineralization
flattens at depth to approximately 10 degrees. This finding is highly
favourable situation for open pit mining conditions, as it would reduce the
stripping ratio when mining operations near the bottom of the pit.

    W Horizon (High Grade Zone)

    Drilling of the W Horizon remains a focus of the 2007 drilling campaign.
Marathon has confirmed continuity of the W horizon, with higher grade
mineralization occurring in envelopes that are approximately 100 m wide and
100 to 200 m in length and strike approximately north-northeast, parallel to
ridges in the footwall.
    Seven drillholes in the vicinity of high grade mineralization discovered
with hole M-07-306 (see MAR news release of April 19, 2007) returned positive
results. The best intersection was 7.86 g/t PGM and gold and 0.42% Cu over 8 m
in hole M-07-332 located 50 m east of M-07-306. The W Horizon was traced
further to the east for another 100 m and was intersected in holes M-07-334
and M-07-335. In hole M-07-335, mineralization graded 3.27 g/t PGM and gold
0.48% copper over 4 m.
    West of hole M-07-306, the W Horizon narrows in hole M-07-325, but
strengthens in hole M-07-327 which graded 1.12 g/t PGM and gold and 0.06%
copper over 12 m. The W Horizon extends 50 m south of hole M-07-306 to hole
M-07-312, which returned values of 2.25 g/t PGM and gold and 0.35% copper over
4 m as reported in Marathon's press release dated May 11, 2007. Hole M-07-329
is located northwest of hole M-07-306 and intersected a syenite dyke over the
entire length of the hole. The W Horizon is still open to the north of
M-07-306, which will be explored through additional planned drilling.
    Hole M-07-335 intercepted 80 m of near surface mineralization grading
0.57 g/t PGM and gold and 0.19% Cu and includes 4 m of 3.27 g/t PGM and gold
and 0.48% Cu; and is interpreted to be a combination of W Horizon and Main
Zone mineralization.
    These holes demonstrate the importance of Marathon's systematic approach
to drilling. The high grade lenses of the W Horizon will be precisely defined
for the resource/reserve estimation which will occur in the autumn of 2007.

    Continued Exploration Focus

    Currently, exploration is focused in the south end of the Main Zone and
north of the Malachite Zone. In light of progress and numerous successes to
date, the management team of Marathon is pleased with the progress of the
exploration program. Marathon has planned 35,000 metres of drilling in 2007
and has to date completed 24,000 metres in 148 holes and has assay results
pending from 26 holes.

    Results from Main Zone and W Horizon

                                    True                      Total PGM
    Hole      Zone  From   To  Thickness     Pd     Pt     Au  and gold   Cu
                      (m)  (m)        (m)  (g/t)  (g/t)  (g/t)     (g/t)  (%)

    M-07-326  MAIN   273  289         16   0.60   0.25   0.07      0.92  0.21
    M-07-326  MAIN   301  337         36   0.25   0.10   0.05      0.40  0.20
    M-07-328  MAIN   276  368         92   0.36   0.13   0.06      0.55  0.22
    includes  MAIN   276  282          6   1.19   0.33   0.14      1.66  0.32
    includes  MAIN   320  368         48   0.33   0.13   0.06      0.52  0.30
    M-07-330  MAIN    42   60         18   0.64   0.23   0.07      0.94  0.10
    M-07-330  MAIN   295  363         68   0.69   0.22   0.09      1.00  0.22
    includes  MAIN   299  319         20   1.73   0.47   0.14      2.34  0.38
    M-07-333  MAIN    46   50          4   1.23   0.25   0.10      1.58  0.17
    M-07-333  MAIN   286  370         84   0.41   0.14   0.07      0.62  0.23
    M-07-335  MAIN    74  154         80   0.39   0.13   0.05      0.57  0.19
    M-07-336  MAIN   171  177          6   0.86   0.54   0.11      1.51  0.09
    M-07-336  MAIN   223  227          4   0.46   0.20   0.06      0.72  0.21
    M-07-336  MAIN   249  291         42   0.41   0.16   0.07      0.64  0.23
    M-07-336  MAIN   259  269         10   0.13   0.27   0.74      1.14  0.39

    M-07-325     W   208  214          6   0.46   0.13   0.05      0.64  0.41
    M-07-327     W   170  182         12   0.75   0.31   0.06      1.12  0.06
    M-07-331     W   105  107          2   0.23   0.38   0.98      1.59  0.03
    M-07-332     W   115  121          6   0.13   0.53   0.95      1.61  0.01
    M-07-332     W   147  155          8   5.62   1.77   0.47      7.86  0.42
    includes     W    74   78          4   2.50   0.58   0.19      3.27  0.48
    Notes - "MAIN" denotes Main Zone and "W" denotes W horizon

    All of the samples were sent to Accurassay, an accredited laboratory in
Thunder Bay, Ont., to be assayed using fire assay and other standard
    All exploration work is being performed under the guidance and
supervision of Phillip C. Walford, President and Chief Executive Officer of
the Company, a professional geologist and Qualified Person as defined by
National Instrument 43-101. Mr. Walford has approved the contents of this
press release.

    About Marathon PGM Corporation

    The Company has a 100-per-cent interest in the Marathon PGM -- Cu
project, located about 10 kilometers north of Marathon, Ont. The project is
currently undergoing a definitive feasibility study and a 35,000 m drill
campaign. As announced previously, the company has completed a revised
preliminary economic assessment in compliance with the provisions of National
Instrument 43-101, showing a measured resource of 39.2 million tonnes
containing 1.6 million ounces of PGM and gold and 285 million pounds of
copper, and an indicated resource of 28.9 million tonnes containing 1.1
million ounces of PGM and gold and 178 million pounds of copper. An additional
low-grade resource was also identified in the report completed by P&E Mining
Consultants Inc. and filed on SEDAR on April 5, 2007.
    In April 2007, Marathon entered into an option agreement with Gossan
Resources on the Bird River Sill Ni-Cu and PGM property, located in
Southeastern Manitoba. Marathon is conducting exploration activities through
2007 at the Bird River Sill and will be drilling at the Page Zone in late

statements of historical fact relating to the Company, certain information
contained herein constitutes "forward-looking statements". Forward-looking
statements are frequently characterized by words such as "plan," "expect,"
"project," "intend," "believe," "anticipate" and other similar words, or
statements that certain events or conditions "may" or "will" occur.
Forward-looking statements are based on the opinions and estimates of
management at the date the statements are made and are subject to a variety of
risks and uncertainties and other factors that could cause actual events or
results to differ materially from those projected in the forward-looking
statements. These risks and uncertainties include but are not limited to those
identified and reported in Management's Discussion and Analysis for the year
ended December 31, 2006. Circumstances or management's estimates or opinions
could change, and management disclaims any obligation to revise or update
forward-looking statements, whether for new information, future events or
otherwise. The reader is cautioned not to place undue reliance on
forward-looking statements.

    The Toronto Stock Exchange has not reviewed and does not accept
    responsibility for the adequacy or accuracy of this release.

    On Behalf of Marathon PGM:
    "Phillip C. Walford"
    Phillip C. Walford, P.Geo.
    President, Chief Executive Officer
    Tel: +1.416.987.0711

For further information:

For further information: David Leng, P.Geo,, (905)
537-5377, Fax: (416) 861-1925,; For media inquiries,
please contact: Vanessa Napoli,, (514) 939-3989

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