TIDMMML 
 
MEDUSA MINING LIMITED 
                                                       ABN: 60 099 377 849 
 
                                                 Unit 7, 11 Preston Street 
                                                            Como  WA  6152 
 
                                                                PO Box 860 
                                                  Canning Bridge  WA  6153 
 
                                                 Telephone:  618-9367 0601 
                                                 Facsimile:  618-9367 0602 
 
      Email:  admin@medusamining.com.au <mailto:admin@medusamining.com.au> 
      Internet:  www.medusamining.com.au <http://www.medusamining.com.au/> 
 
 
                                                                    ANNOUNCEMENT 
 
                                                                   20 April 2010 
 
                           SAUGON DRILLING COMMENCING 
 
Medusa Mining Limited (ASX and AIM - MML; TSX - MLL) ("Medusa" or the "Company") 
through   its   Philippines   operating   company  Philsaga  Mining  Corporation 
("Philsaga"), advises that drilling will commence during May at the Saugon First 
Hit  Vein  Prospect.  This  project  was  last  drilled by the Company in 2004. 
Selected previous intersections are listed below: 
 
Highlights include: 
 
+-------------+------------+------------+ 
| Hole Number | Intercepts |   Grade    | 
|             |  (metres)  | (g/t gold) | 
+-------------+------------+------------+ 
|   SDDH 2B   |    1.00    |   35.75    | 
+-------------+------------+------------+ 
|   SDDH 27   |    1.00    |   16.30    | 
|             +------------+------------+ 
|             |    5.95    |    9.63    | 
+-------------+------------+------------+ 
|   SDDH 28   |    2.05    |   20.54    | 
+-------------+------------+------------+ 
|   SDDH 29   |    0.90    |   15.32    | 
+-------------+------------+------------+ 
 
Geoff Davis, Managing Director of Medusa, commented: 
 
"Drilling  in 2004 reported some  tantalising results at  Saugon. The high grade 
gold  mineralisation is poly-metallic with some high silver and copper-lead-zinc 
values hosted by high-level, high energy epithermal quartz breccias and veins. 
 
The  association  of  the  veins  and  breccias with a large north-east-trending 
aeromagnetic demagnetised zone in combination with widespread surface alteration 
suggests  that  this  mineralisation  may  be  associated with a porphyry copper 
system laterally or at depth". 
 
 
FIRST HIT VEIN 
 
Discussion 
 
Figure  1 (please  see  the  link  at  the  end  of this announcement) shows the 
regional  geology, location of  the First Hit  Vein, and the  Paradise and Mabas 
Prospects.  The First Hit drill hole  locations are also shown. Figure 2 (please 
see  the link at the end of this announcement) shows the longitudinal projection 
of the First Hit drill hole intersections. 
 
Work  in  2004 involved  drilling  of  the  First  Hit  Vein in conjunction with 
underground development via a 30 metre deep inclined winze down the vein-breccia 
to  assist in understanding the mineralisation. By chance, the winze was sunk at 
a  contact  between  well  banded  and  high  grade  vein  on the north wall and 
polylithic  hydrothermal quartz breccias on  the south wall containing fragments 
of various different vein and silica types, and with lower grade gold values. 
 
The  drilling  has  indicated  three  zones  of  mineralisation  as being partly 
developed  as footwall and hanging wall zones  and a well developed central zone 
(First   Hit   Vein)   which  has  the  highest  grades  and  a  more  prominent 
silver-polymetallic association. 
 
The  First Hit Vein in the drilling mainly consists of brecciated vein material, 
generally with good gold grades, but somewhat erratic due possibly to the nature 
of  the material. Some intersections, such  as in SDDH 2B, consist of brecciated 
massive    sulphide   material   including   fragments   of   chalcopyrite   and 
galena-sphalerite.  Sphalerite-rich  breccias  patches  were  encountered at the 
south  side of the bottom of the winze. The base metal breccia fragments suggest 
that  they may be derived from a source at depth with the breccia zone appearing 
to be shoot-like with a northeast plunge. 
 
Regional Setting 
 
Subsequent  to the drilling in 2004, an  aeromagnetic survey was completed which 
showed   the  First  Hit  Vein  set  are  on  the  northern  edge  of  a  large, 
northeast-trending  demagnetised zone  over 2,000 metres  wide and approximately 
8,000 metres long, part of which is shown on Figure 1(please see the link at the 
end  of  this  announcement).  A  number  of  features  within  this  zone  were 
interpreted   to   be   suggestive   of   intrusive  bodies,  possibly  porphyry 
copper-related.  Field  work  has  established  that  outcropping  areas  of the 
northern  side  of  this  zone  show  intense  clay-pyrite  alteration, which is 
presumed to extend across the bulk of the zone under cover to the south. 
 
Sections  of the demagnetised zone are  covered by younger sediments, some grits 
and  shales at the base and capped  by white, semi-massive to massive limestone. 
This  appears to be a remnant of the same younger sequence that occurs elsewhere 
to the north in the Company's tenements. 
 
Drilling 
 
Drilling  is re-commencing at the First Hit Vein, and also at additional targets 
that  have  been  outlined  by  recent  field  work. As the drill holes were not 
downhole  surveyed  in  the  early  drilling,  some  holes  will  be repeated to 
establish  the geometry  of the  mineralised system  before step-out drilling is 
undertaken.   Two  rigs  will  be  involved  in  the  programme  which  will  be 
results-driven over the next 4 to 6 months. 
 
Table I. First Hit Vein drill hole results >3 g/t gold and >0.2 metres downhole 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|Hole  | East |North |Dip |Azimuth|  From  | Width  |        Grade (uncut)        | 
|number|      |      | ( °)|  ( °)  |(metres)|(metres)|(g/t gold, g/t Ag, % Cu, %Pb,| 
|      |      |      |    |       |        |        |            %Zn)             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |616944|899267|-55 |  316  |  108.50|    1.00|35.75, 544, 0.38, 1.88, 1..62| 
|2B    |      |      |    |       |        |        |                             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH 4|616912|899318|-59 |  290  |   89.50|    0.20|9.76, 142, 0.30, 1.18, 0.40  | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH 5|616964|899344|-54 |  345  |   71.80|    0.95|3.26, 32, 0.20, 0.20, 0.61   | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH 9|616979|899250|-67 |  319  |  176.20|    0.20|4.97, 78, 0.74, 1.51, 1.54   | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |616921|899334|-73 |  300  |   60.80|    1.00|16.30, 244, 1.32, 2.65, 4.97 | 
|27    |      |      |    |       |        |        |                             | 
|      |      |      |    |       +--------+--------+-----------------------------+ 
|      |      |      |    |       |   71.05|    5.95|9.63, not assayed            | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |616922|899307|-70 |  300  |   89.95|    2.05|20.54, not assayed           | 
|28    |      |      |    |       |        |        |                             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |616961|899315|-72 |  300  |  112.25|    0.90|15.32, not assayed           | 
|29    |      |      |    |       |        |        |                             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |616922|899254|-75 |  315  |  174.25|    0.75|3.94, not assayed            | 
|31    |      |      |    |       |        |        |                             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |617033|899279|-65 |  310  |  173.80|    0.40|6.87, not assayed            | 
|34    |      |      |    |       |        |        |                             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
|SDDH  |617000|899305|-65 |  310  |  128.20|    0.85|5.05, not assayed            | 
|35    |      |      |    |       |        |        |                             | 
+------+------+------+----+-------+--------+--------+-----------------------------+ 
Notes: 
(i)      Intersection widths are downhole drill widths not true widths; 
(ii)     All assays are by McPhar Geoservices Inc laboratory in Manila; 
(iii)    Grid coordinates based on the Philippine Reference System 92; 
(iv)    The drill holes have not been downhole surveyed. 
 
OTHER PROSPECTS 
 
Paradise Prospect 
 
Holes  SDDH 19 and 22 were drilled at the  Pardise Prospect which consists of an 
outcropping silica-barite cap with anomalous gold values. Drilling encountered a 
1.60 metre  wide  barite  vein  containing  0.89 g/t gold. Extensive clay-pyrite 
alteration  of  volcanics  was  uncovered  in  road  cuttings  to  the south and 
northeast of the silica outcrops. 
 
Mabas Prospect 
 
Holes  SDDH 15,16,18,20, 21, 23 and 24 were drilled  at the Mabas Prospect where 
there  were some  existing workings.  The best  drillhole intersection below the 
workings  was 1 metre at  5.64 g/t gold in  SDDH 24. The workings were re-opened 
and  developed.  The  mineralisation  consisted  of  generally black chalcedonic 
silica  with some  lead-zinc mineralisation  and gold  values in  the 6 to 8 g/t 
range.  The silica appeared to be confined to  a lens or boudin within the Mabas 
Shear zone. 
 
Mabas South Prospect 
 
The  Mabas South Prospect has been discovered by recent field work, and whilst a 
narrow  vein at <0.5  metres wide, has  consistently returned gold values around 
10 g/t gold in most samples. This vein will be drilled. 
 
 
DRILL HOLE SAMPLING AND ASSAYING PROCEDURES 
 
Samples  were  taken  from  mainly  HQ  sized (hole outside diameter 96 mm, hole 
inside  diameter 63.5mm) and some NQ sized  (hole outside diameter 75.8 mm, hold 
inside  diameter 47.6 mm) drill core. The  selected sample intervals were halved 
by  diamond saw and half  the core was bagged,  numbered and sent to the Company 
laboratory.  In a small number  of cases to confirm  the geological logging, the 
selected  interval  was  re-split  and  Å?  core  re-submitted  for  assay at the 
laboratory  of McPhar  Geoservices Inc.  ("McPhar"), a  NATA and  ISO 9001/2000 
accredited laboratory in Manila. 
 
The  gold assaying used fire assay on a 30 gram sample with an Atomic Absorption 
Spectrometry  ("AAS") finish.  A selected  number of  samples were checked using 
gravimetric  fire  assay  techniques.  Duplicate  samples  and standards will be 
included in each batch of check samples. 
 
Copper,  lead, zinc  and silver  assaying were  conducted by  AAS in  the latter 
stages following a concentrated acid leach on a 1 gram sample. 
 
 
For further information please contact: 
 Australia 
 
 Medusa Mining Limited                       +61 8 9367 0601 
 
 Geoffrey Davis, Managing Director 
 
 Roy Daniel, Finance Director 
 
 United Kingdom 
 
 Fairfax I.S. PLC                            +44 (0)20 7598 5368 
 
 Nominated Adviser and Broker 
 
 Ewan Leggat/Laura Littley 
 
 Lothbury Financial Services Limited         +44 (0)20 7868 2567 
 
 Michael Padley/Libby Moss 
 
 Canada 
 
 Nicholas Sayce, Investor Relations          +1 416 822 4404 
 
 
 
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   onwww.sedar.com 
<http://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  is  currently  expanding  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 
increase  its forecast  production to  100,000 ounces per  year in  2010, and is 
conducting   near  mine  exploration to  assess  the  possibilities  of  further 
expansion  to 200,000 ounces per year.  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 in 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. 
 
 
[HUG#1405423] 
 
 
 
 
 
    Saugon Drilling Commences Images: http://hugin.info/138050/R/1405423/359216.pdf 
 

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