Upcoming Announcement on Strategy

Orosur Mining Inc.

Upcoming Announcement on Strategy

SANTIAGO, Chile, September 10, 2012 – Orosur Mining Inc. (the "Company") (TSX: OMI) (LSE: OMI) the South American-focused gold producer and explorer announces that the Company plans to release its 1st quarter results to August 31, 2012 on October 15, 2012. The quarterly update will be an opportunity for the newly constituted Board to set out the Company’s revised strategy and objectives including:

• Expectations for the production and cash flow to be derived from the San Gregorio operation in Uruguay;
• Indications of a progressive dividend policy including the timing and quantum of future dividends;
• Exploration and development strategy for extending mine life at our San Gregorio operations in Uruguay;
• Plans for our Chilean projects at Pantanillo, Anillo and Talca.

Details of a conference call covering the first quarter results and the Company’s strategy will be announced closer to the time.

ENDS

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: OMI) and London (AIM: OMI).

For further information, please contact:

Orosur Mining Inc

David Fowler, CEO Ignacio Salazar, CFO + 562 9246800; [email protected]

Canaccord Genuity Limited (Nominated Adviser & Joint Broker)

Rob Collins / Andrew Chubb, +44 (0) 20 7523 8000

Seymour Pierce (Joint Broker)

Stewart Dickson / Jeremy Stephenson +44 (0) 20 7107 8000

Blythe Weigh Communications (Public Relations and Investor Relations)

Tim Blythe: +44 (0) 7816 924626 Robert Kellner: +44 (0) 7800 554377 Samantha Ryan +44 (0) 7947 762658