Notice of Q2 Results Conference Call and Webcast

Notice of Q2 Results Conference Call and Webcast

Orosur Mining Inc.

Orosur Mining Inc. Announces
2011 Second Quarter and Half Year Earnings Conference Call and Web Cast
9:00 AM Eastern and 14:00 UK time,
Thursday January 13, 2011

Orosur Mining Inc. ("OMI" or the "Company") (TSX VENTURE:OMI) (LSE: OMI) announces that it will hold its fiscal 2011 quarterly and first half earnings and investor update conference call and webcast on Thursday January 13, 9:00 Eastern Time, 14:00 UK time.

The Company’s CEO, David Fowler, will brief investors on operating results and development plans, and answer questions from call participants. Web cast participants may submit questions in advance by email at [e-mail].

The earnings release for the second quarter and 6 months ended November 30, 2010 will be issued on Thursday January 13 at 7:00 UK time.

The conference call can be accessed by dialing [phone] (US toll) or [phone] (UK Toll) and the Confirmation Code 9148786. All participants will be required to register with the operator.

A simultaneous web cast of the conference call and replay will be available at http://www.orosur.ca . You will need to have Windows Media Player installed on your computer and you will also be required to complete a registration page in order to log on to the webcast.

A slide presentation will also be available prior to the call / web cast for download from the investor relations section of Orosur Mining Inc.’s corporate website at http://www.orosur.ca/investors/presentations/.

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, CEODavid Fowler, CEO
Ignacio Salazar, CFO + 598 2601 6354; Ignacio Salazar, CFO + 598 2601 6354; [e-mail]

Matrix Corporate Capital LLP
Louis Castro, [phone]Louis Castro, [phone]
Tim Graham, [phone]Tim Graham, [phone]

Blythe Weigh Communications
Tim Blythe: [phone]Tim Blythe: [phone]
Ana Ribeiro: [phone]Ana Ribeiro: [phone]
Matthew Neal: [phone]Matthew Neal: [phone]