Issue of Shares upon Exercise of Stock Options

Issue of Shares upon Exercise of Stock Options

Orosur Mining Inc.

Orosur Mining Inc
Exercise of Share Options

SANTIAGO, Chile, November 4, 2011 Orosur Mining Inc. ("Orosur" or "the Company") (TSX-V: OMI; AIM:OMI) announces that following the exercise of options by employees, the Company has issued a total of 7,500 Common Shares of the Company (“Common Shares”).

Application has been made for 7,500 new Common Shares to be admitted to trading on AIM (“Admission”). It is expected that Admission will become effective and that dealings will commence on or around 11 November 2011 in respect of those Common Shares.

On Admission the Company will have 77,979,809 Common Shares in issue.

ENDS

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 + 562 9246800; [e-mail]

Canaccord Genuity Limited (Nominated Advisor and Broker)
Bhavesh Patel + 44 (0) 207 050 6751
Ryan Cohen, [phone]

Blythe Weigh Communications (Public Relations and Investor Relations)
Tim Blythe: [phone]
Ana Ribeiro: [phone]
Matthew Neal: [phone]