Orosur Mining Inc. Announces

Change of Adviser

SANTIAGO, Chile, August 1, 2012 � Orosur Mining Inc. (the "Company") (TSX: OMI) (LSE: OMI) announces that Canaccord Genuity Limited has been appointed as the Company's Nominated Advisor and Joint Broker with immediate effect. This follows the completion of the acquisition of Collins Stewart Hawkpoint plc by Canaccord Financial Inc and change of name of Collins Stewart Europe Limited to Canaccord Genuity Limited.

This change and required announcement is as a result of Canaccord Financial Inc's acquisition of Collins Stewart Hawkpoint plc and not a change instigated by the Company.

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; info@orosur.ca

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

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