MOA Mountain Lake Resources Inc.

Medusa Mining Limited (TSX:MLL)(ASX:MML)(AIM:MML) ("Medusa" or the "Company"),
through its Philippines subsidiary, Philsaga Mining Corporation ("Philsaga"),
advises that drilling at Lingig has continued to intersect copper mineralisation
in two geological settings.


Basalt-hosted mineralisation (now called the Basalt Prospect) is hosted within
the basaltic and doleritic rocks around the 1974 discovery area. This
mineralisation appears to form a large north plunging body presumed to be still
open to the north down-plunge. The most recent and most northerly drill hole
returned 154.60 metres at 0.45% copper (with last 45.90 metres averaging 0.65%
copper at a 0.3% copper cut- off) but was abandoned in strong mineralisation. It
is also interpreted that the bottom section of this mineralisation may be
faulted-off by the underlying thrust fault and the rest of the mineralised zone
is yet to be located. Further drilling is required.


Breccia-hosted mineralisation (now called the Breccia Prospect) has continued to
be located associated with intense biotitic alteration in dioritic, polylithic
hydrothermal breccias.


The breccia body is tabular and open to the south with copper mineralisation in
intensely altered hydrothermal breccias with the most recent intersections of
154.7 metres at 0.19% copper in drill hole LIN 37 and 86.0 metres of 0.12%
copper in drill hole LIN 40. Further drilling is required.


Managing Director Geoff Davis commented:

"We continue to make good progress in unravelling the mineralisation and its
controls at Lingig. Whilst the basalt-hosted mineralisation appears to be open
down-plunge and with the potential to develop into a larger body of
mineralisation, at the breccia-hosted mineralisation we are now demonstrating
copper mineralisation within a large breccia body with porphyry copper
associations and which is open to the south.


The Company's copper portfolio is expanding with the recent discovery of the Usa
copper-gold porphyry target. Further work is expected to continue to add value
to these exploration targets."


BACKGROUND

The Lingig prospect is covered by a Mines Operating Agreement ("MOA") over MPSA
application number APSA 024-XIII comprising two parcels situated to the north
and to the east (the Lingig copper prospect) of the Co-O Mine and millsite.


Figure 1 shows the locations of the Company s copper projects and Figure 2 shows
the current interpretation of the regional geology with drill hole locations and
a summary of results. Table 1 contains all drill hole results obtained to date.
Figure 2 shows the detailed geology and drill hole locations and intersections
around the Basalt prospect, and the projection of the Breccia prospect and
intersections. Additional background information is contained in announcements
dated 13 November 2007, 17 March 2008, 20 August 2008, 31 October 2008, 18 March
2009 and 9 October 2009 and the December 2007 quarterly report.


The 9 October 2009 announcement reported copper mineralisation contained within
two settings, in basaltic host rocks and associated with a regional thrust zone
(Zone 1) - now called the Basalt Prospect, and porphyry associated style
mineralisation in dioritic rocks below the thrust zone (Zone 2), now called the
Breccia Prospect.


Table I summarises all drilling completed since 2008.

Drilling

Since the announcement on 6 October 2009, the Company has drilled approximately
6204.5 metres in 15 angled holes using three rigs (LIN025 to LIN040). All holes
were cored from surface. Drilling difficulties were experienced in LIN030 which
was abandoned at a depth of 280 metres in strong copper mineralisation.


Basalt Prospect

The recent drilling has confirmed the continuation of the copper mineralised
zone above the thrust contact (Fig. 2), with the 'mineralisation now interpreted
to form a large plunging body with a north-northeast trend. Hole LIN030 was
drilled to test the down plunge continuation of the mineralisation and
intersected epidote, magnetite, pyrite and copper sulphides in a basalt host,
with similar geology, mineralisation and alteration to that intersected in hole
LIN001. The hole was abandoned in mineralisation due to drilling difficulties.
Assay results suggest that the hole was terminated above the expected high grade
zone overlying the thrust contact. Hole LIN029 appears to have intersected the
most up-plunge high grade mineralisation. Hole LIN022 was collared in the low
grade halo of the plunging body, and drilled over the top. Hole LIN026
intersected basalt with halo mineralisation of strong epidote alteration with
pyrite-minor chalcopyrite veining. The hole appears to have drilled under the
plunging body. Hole LIN039 intersected basalt with halo mineralisation similar
to LIN026, and appears to have drilled under and to the east of the plunging
body.


Further drilling is required below LIN030 to confirm the down-plunge extensions
and, if successful, to drill out the body.


In addition, it is interpreted that the zone discovered so far is only part of a
larger mineralised body which has been truncated at depth by the underlying
thrust fault. The Company is investigating methods which may assist in locating
the rest of the mineralised body.


Breccia Prospect

This mineralisation is hosted by polylithic intrusive hydrothermal breccias.
Variably sized clasts to 40 centimetres of quartz diorite, basalt and minor
dolerite host disseminated fine-grained chalcopyrite in both the matrix and in
some clasts. The chalcopyrite is associated with secondary pale brown biotite,
which is noted in both the matrix and in some of the breccia clasts. A distinct
lack of mineralised quartz veining and minor magnetite characterise the breccia.
The breccia appears to be blind, has not been found reaching the surface, and is
enveloped by a weak pyrite halo.


The breccia pinches out to the north. Intersections in LIN037 and LIN040
indicate that the breccia is open to the south. Figure 2 shows the projection of
the breccia and the drill hole intersections.


Work Programme

Data compilation and assessment, possibly including additional geophysics, will
be undertaken prior to further drilling.


THE COPPER PORTFOLIO SUMMARY



1.  Lingig

    See above 

2.  Kamarangan

    Ten drill holes were drilled below a large area of variably mineralised
    skarn rocks where two holes, KAM 1 and 2, on the east side of the skarn
    rocks intersected a fertile diorite with copper-molybdenum
    mineralisation within phylitically (sericite) altered diorite. Detailed
    results are available in the announcement dated 29 May 2009.

    With respect to molybdenum the following were intersected: 

    (i)  Molybdenum mineralisation is visible in hole KAM 1 to a maximum
         value of 244 ppm and averages 37 ppm over the last 74 metres of the
         hole from 357.70 metres depth. Copper values in the diorite include
         14 metres at 0.16% from 173.70 metres, 30 metres at 0.15% copper
         from 457.70 metres and 22 metres at 0.11% from 495.70 metres. 

    (ii) Molybdenum mineralisation is visible in drill hole KAM 2 to a
         maximum value of 138 ppm and averages 41 ppm over the last 46 
         metres of the hole from 405 metres depth. Other less coherent zones
         are present higher up in the hole. Copper values in the diorite 
         include 12 meters at 0.14% from 210 metres and 18 meters at 0.11% 
         from 282 metres. 

    Further drilling is required to the east of these intersections. 

3.  Usa

    The newly discovered Usa copper-gold diorite porphyry target was
    described in the announcement of 5 May 2010. Surface work is continuing
    to outline the 500 metre by 500 metre target where copper values in rock
    chips peak at 0.59% copper and gold peaks at 0.42 g/t gold. 

4.  Co-O

    The Company has believed for some time that the Co-O Mine vein system
    would be associated with a porphyry copper system.

    Observations underground to the east of the Oriental Fault in the mine
    and from assaying of wall rocks to the veins show an increasing copper
    content around the veins in their selvedges towards the east to levels
    of around 0.1 to 0.4% copper. Some discontinuous veins to 0.10 to 0.20
    metres wide of massive pyrite-chalcopyrite have also been located in
    drilling separate from the veins.

    Further work is required to define copper drill targets to the east of
    the mine. 

5.  Gamuton

    A series of four holes were completed in the Gamuton area to test gold-
    bearing quartz veins to the west of the Co-O Mine. Several holes
    intersected wide zones of intense propylitic alteration with abundant
    epidote, zones of silicification and hydrothermal breccias associated
    with strongly anomalous gold contents of approximately 0.5 g/t and
    anomalous silver values accompanied by irregular chalcopyrite veinlets.
    The mineralisation is interpreted as being indicative of nearby porphyry
    copper mineralisation.

    Further surface work is required before drilling is recommenced. 

6.  Saugon

    As detailed in the announcement dated 20 April 2010, the Saugon gold-
    silver polymetallic mineralisation is currently interpreted to be linked
    to a porphyry copper system within an extensive demagnetised and
    alteration zone. Drilling is commencing in May 2010.

7.  Lasang

    Lasang is a conceptual copper porphyry target based on the
    interpretation of aeromagnetics. 



Information in this report relating to Exploration Results has been reviewed and
is based on information compiled by Mr Geoff Davis, who is a member of The
Australian Institute of Geoscientists. Mr Davis is the Managing Director of
Medusa Mining Limited and has sufficient experience which is relevant to the
style of mineralisation and type of deposits under consideration and to the
activity which he is undertaking to qualify as a "Competent Person" as defined
in the 2004 Edition of the "Australian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves" and is a "Qualified Person" as
defined in "National Instrument 43-101" of the Canadian Securities
Administrators. Mr Davis consents to the inclusion in the report of the matters
based on his information in the form and context in which it appears.


Refer to the Technical Report which was filed on www.sedar.com in March 2010 for
further discussion of the Co-O Deposit s geology, structural controls, drilling,
sampling and assaying information, and any known material environmental,
permitting, legal, title, taxation, socio-political, marketing or other relevant
issue.


ABOUT MEDUSA MINING LIMITED

Medusa Mining Limited ("Medusa" or the "Company"), a public company listed on
the ASX, AIM and the TSX, is an Australian based gold producer, focussed solely
on the Philippines.


With current mineral resources comprising indicated 580,000 ounces of gold and
inferred 1,310,000 ounces of gold, Medusa s corporate strategy is to become a
mid-tier, 300,000 to 400,000 ounce per year, low-cost gold producer.


The Company has completed the expansion of its high grade Co-O Mine operations
(indicated resources 580,000 ounces of gold inclusive of a probable reserve of
500,000 ounces of gold, and inferred resources 660,000 ounces of gold) to a
production level of 100,000 annualised ounces, and is currently conducting near
mine exploration to assess the possibilities of further expansion to 200,000
ounces per annum. Current cash costs at the Co-O Mine are approximately US$190
per ounce.


A pipe-line of deposits is now being established with the Bananghilig Deposit
(inferred resource of 650,000 ounces of gold) recently added and which is
expected to expand, potentially in conjunction with nearby discoveries.


Further potential upside exists for the discovery of substantial copper deposits
within the tenement holding of more than 800 km2.


DISCLAIMER

This announcement may contain certain forward-looking statements. The words
'anticipate', 'believe', 'expect', 'project', 'forecast', 'estimate', 'likely',
'intend', 'should', 'could', 'may', 'target', 'plan' and other similar
expressions are intended to identify forward-looking statements. Indications of,
and guidance on, future earnings and financial position and performance are also
forward-looking statements.


Such forward-looking statements are not guarantees of future performance and
involve known and unknown risks, uncertainties and other factors, many of which
are beyond the control of Medusa, and its officers, employees, agents and
associates, that may cause actual results to differ materially from those
expressed or implied in such statements.


Actual results, performance or outcomes may differ materially from any
projections and forward-looking statements and the assumptions on which those
assumptions are based.


You should not place undue reliance on forward-looking statements and neither
Medusa nor any of its directors, employees, servants or agents assume any
obligation to update such information.


To view Figure 1. Location of the copper projects, please visit the following
link: http://media3.marketwire.com/docs/mllfigure1.pdf


To view Figure 2. Geological map showing the Basalt and Breccia Prospects and
drill hole intersections, please visit the following link:
http://media3.marketwire.com/docs/mllfigure2.pdf


To view Table I. Summary of all new Lingig drilling results for intersections
greater than 10 metres wide, please visit the following link:
http://media3.marketwire.com/docs/mlltableI.pdf


ABN: 60 099 377 849

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