HLS Hls Therapeutics

Southern Hemisphere Mining Limited (TSX VENTURE:SH)(ASX:SUH) -  

HIGHLIGHTS



-   Updated JORC Measured and Indicated resource of 10.3 million tonnes @
    9.2% Manganese ("Mn") estimated by Coffey Mining 
    
-   Remaining high grade Inferred Resource of 3.1 million tonnes @ 10.3% Mn 
    
-   Next stage of bulk sampling, comprising the excavation of four winzes,
    is nearly completed, and a 4.5 tonne sample will be sent to a laboratory
    in South Africa for bench scale pilot plant testing 
    
-   Pilot plant test work designed to confirm the beneficiation potential of
    Los Pumas Project resource to a targeted product specification of 38%
    Mn, 0.8% Fe, 20% SiO2 and 0.06% P 
    
-   Community Land Owners Agreement signed granting easements which allow
    further manganese exploration and mine development to be undertaken at
    Los Pumas 
    



Southern Hemisphere Mining Limited ("Southern Hemisphere" or "the Company") is
pleased to report a number of significant developments with its 100% owned Los
Pumas Manganese Project in Northern Chile, including the completion of an
updated JORC resource estimate and signing of a key Land Owners Agreement
enabling further exploration and mine development to proceed.


Southern Hemisphere has continued to focus its activities on the Feasibility
Study currently underway on the Los Pumas Project. This Study is targeted for
completion during the third Quarter of 2010, paving the way for the Company to
raise capital for project development in the second half of 2010 with the
objective of commencing manganese production in the second half of 2011.


Independent Resource Determination

The Company engaged Coffey Consultoria e Servicios Ltda Brazil ("Coffey Mining")
to review the results of previous drilling at Los Pumas, re-model the resource
and provide an updated resource statement.


Using a 4% Mn block cut off grade, Coffey Mining has calculated a High Grade
Measured and Indicated Resource of 10.3 million tonnes grading 9.2% Mn, 58.2%
SiO2, 2.7% Fe2O3, 5.7% Al and 0.04% P.


A summary of the new high grade resource estimate is provided in the table below:



---------------------------------------------------------------------------
                             LOS PUMAS PROJECT                             
              JORC COMPLIANT RESOURCE ESTIMATION - APRIL 2010              
                                                                           
---------------------------------------------------------------------------
                                  Tonnes     Mn   SiO2  Fe2O3     Al      P
           Resource                 (Mt)    (%)    (%)    (%)    (%)    (%)
---------------------------------------------------------------------------
           Measured                  4.3    9.4   58.5    2.6    5.7   0.04
           ----------------------------------------------------------------
High Grade Indicated                 6.0    9.0   57.8    2.9    5.8   0.04
           ----------------------------------------------------------------
           Measured plus                                                   
+4% Mn      indicated               10.3    9.2   58.2    2.7    5.7   0.04
           ----------------------------------------------------------------
           Inferred                  3.1   10.3   56.2    2.9    5.5   0.05
---------------------------------------------------------------------------



In addition to the High Grade Resource, Coffey Mining has calculated a JORC
compliant Low Grade Resource as detailed in the table below.




---------------------------------------------------------------------------
                                  Tonnes     Mn   SiO2  Fe2O3     Al      P
           Resource                 (Mt)    (%)    (%)    (%)    (%)    (%)
---------------------------------------------------------------------------
           Measured                 10.0    2.8   65.7    3.2    6.5   0.04
           ----------------------------------------------------------------
Low Grade  Indicated                20.3    2.9   63.1    4.0    6.8   0.05
           ----------------------------------------------------------------
+2% -4%    Measured plus                                                   
Mn          indicated               30.3    2.8   64.4    3.6    6.7   0.04
           ----------------------------------------------------------------
           Inferred                234.3    2.3   62.3    4.1    7.0   0.06
---------------------------------------------------------------------------



Since commissioning the updated resource, Southern Hemisphere has completed a
further 88 reverse circulation drill holes, the results of which will be
incorporated in the next resource update.


Los Pumas is a flat, tabular deposit, which lies close to surface, indicating
the potential for a low strip ratio and favourable mining characteristics
despite an expected relatively low product yield.


Metallurgical Test Work

Initial metallurgical test work on Los Pumas mineralisation using heavy liquid
separation ("HLS") tests supported the beneficiation potential of the
mineralisation to achieve the Company's targeted product specification of 38%
Mn, 0.8% Fe, 20% SiO2 and 0.06% P.


The Company has since undertaken more tests on composite core samples from 25
diamond drill holes using HLS techniques at the Transmin Metallurgical
Consultants' laboratory in Lima, Peru. These tests were carried out using core,
crushed to a top size of 10mm and sample sizes ranging from 600 grams to 6
kilograms. HLS tests were completed on three size fractions, namely +0.5mm -2mm,
+2mm -5mm and +5mm -10mm.


Recoveries from this test work programme yielded variable results that indicated
the need for further investigation of the beneficiation characteristics of the
Los Pumas deposit. The dynamic pilot plant test work that is to be conducted by
Mintec in South Africa, will provide the closest simulation to expectations from
the full scale plant. Mintec is a recognised leader in heavy media separation.


20 Year Community Agreement

The Company is also pleased to advise that its 100%-owned Chilean subsidiary,
Minera Hemisferio Sur SCM ("MHS") has signed an agreement with the Putre
Community Land Owners (the surface owners at the Los Pumas Project) providing
MHS with easement rights over the Putre Community Lands.


These Community Lands include MHS's current exploration and exploitation
concession areas.


The Putre Community recognises the economic benefits of the potential investment
in the Project for their lands, which are part of Chile's Region XV, which is
targeting development.


Subject to annual easement payments the agreement grants MHS use of the land for
all exploration and mining purposes, including the construction of plant,
buildings, and associated infrastructure for a 20 year period.


"JORC" (Joint Ore Reserves Committee Code of the Australasian Institute of
Mining and Metallurgy)


Competent Person's Statement

The details contained in this report pertain to information compiled by Mr.
Trevor Tennant, a full time employee of the Company and who is a Member of the
Australasian Institute of Mining and Metallurgy. Mr Tennant has sufficient
experience which is relevant to the style of mineralisation and type of deposit
under consideration and to the activity which he is undertaking to qualify as a
Competent Person as defined in the December 2004 Edition of the "Australian Code
for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Mr
Tennant consents to the inclusion in the report of the matters based on this
information in the form and context in which it appears.


As required by Canadian National Instrument 43-101, Coffey Mining designated
qualified persons responsible for reviewing the technical information herein
contained are Beau Nicholls and Bernardo Horta de Cerqueira Viana.

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