Orosur Mining Inc.: Production Update

MONTEVIDEO, Uruguay 8 June, 2011. Orosur Mining Inc. (“OMI” or the “Company”) (TSX VENTURE: OMI) (LSE: OMI) announces that its San Gregorio Operations have produced 55,820 ounces of gold for the financial year to May 31, 2011, better than the forecast production target of 55,000 ounces. Ore processed for the year was 1,535,468 tonnes at a gold grade of 1.21 g/t with recovery averaging 93.4%. This compares to 1,530,477 tonnes at a grade of 1.22 g/t with a recovery of 93.4 % for the prior financial year when 56,050 ounces were produced.

The Arenal Deeps project is progressing ahead of expectation since permission to commence development was received on March 17th. Ground conditions are good and the single face ramp has reached the first level to access the Main Vent raise. The Contractor (Redpath) reports 417m have been achieved since the first blast on March 18th. Advance meter rates are above plan and costs are in line with budget. First ore development is scheduled for August 2011 when the Uruguayan mining authority (DINAMIGE) is expected to grant full permission for the project.

A 43-101 compliant Silver resource model for the Arenal Deeps project has been completed and the Technical Report will be available on SEDAR in the coming days.

The new tailings dam project was approved by the Environmental authorities in May 2011 and is on schedule to be completed in December 2011.


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.

About Orosur Mining Inc. 

Orosur Mining Inc. is a fully integrated gold producer and exploration company focused on identifying and developing gold projects in Latin America. The Company operates the only producing gold mine in Uruguay (San Gregorio), and has assembled an exploration portfolio of high quality assets in Uruguay and Chile. The Company is quoted in Canada (TSX-Venture Exchange: OMI) and London (AIM: OMI).

For further information, please contact:

Orosur Mining Inc
David Fowler, CEO
Ignacio Salazar, CFO  + 598 2 601 6354;

Matrix Corporate Capital LLP (Nominated Adviser & Broker)
Robin Henshall +44 (0) 203 206 7172

Blythe Weigh Communications (Public Relations and Investor Relations)
Tim Blythe: +44 (0) 7816 924626
Ana Ribeiro: +44 (0) 7980 321505
Matthew Neal: +44 (0) 7917 800011

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