Orosur Mining Inc. Issue of Ordinary Shares upo...

Orosur Mining Inc. Issue of Ordinary Shares upon Exercise of Stock Options

Orosur Mining Inc.

Orosur Mining Inc. ("OMI" or the "Company") (TSX-V: OMI) (LSE: OMI) announces that, following the exercise of options by employees, today the Company has issued a total of 12,000 Common Shares of the Company (“Common Shares”) at CAD 0.60 per share.

Application has been made for 12,000 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 7 April, 2011 in respect of those Common Shares.

On Admission, the Company will have 65,218,555 Common Shares in issue.

A typographical error made in the press release dated December 13, 2010 is hereby corrected, where it says that the stock options granted to Mr. Browning could be exercised “on or before December 11, 2010”, it should say “on or before December 11, 2015”.

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:

Orosur Mining Inc

David Fowler, CEO

Ignacio Salazar, CFO, + 598 2601 6354

[e-mail]

or

Matrix Corporate Capital LLP

Louis Castro, [phone]

Tim Graham, [phone]

or

Blythe Weigh Communications

Tim Blythe, [phone]

Ana Ribeiro, [phone]

Matthew Neal, [phone]