Orosur Mining Inc. Announces Change of Board Composition.

SANTIAGO, Chile -- Orosur Mining Inc. (the "Company") (TSX: OMI) (LSE: OMI) announced today the appointment of a new Chairman, Tony Shearer. The Company is also seeking to appoint two new independent non-executive directors in due course.

Tony Shearer has been appointed to the Board as a Non-Executive Director and Chairman until a new Chairman is identified. He is based in London, England, and is aged 63. He was Chairman of the Company from 2002 to 2009. He is a chartered accountant who was Chief Executive of Singer & Friedlander until 2005, and since then has been non-executive Director of a number of AIM and other listed companies.

Mr Ralph Browning, Mr Mario Caron and Mr Gijsbert Groenewegen have resigned as Directors of the Company.

Mr Bill Lindqvist has advised the Company that he will not stand for re-election at the Company's next Annual General Meeting after serving as a Director for more than eight years.

David Fowler, Chief Executive, said "I am pleased to welcome Tony back to the Board. Having served as Chairman for seven years, he knows the Company well and as a shareholder has continued to follow its progress closely since he stepped down in 2009."

"I would like to thank Ralph, Mario and Gijsbert for their contributions to the Company over the past three years,"

"Over the coming months the Company will review its strategy maximizing returns to shareholders."

The Board of the Company now comprises Tony Shearer as Chairman with Bill Lindqvist, Roger Davey, Julio Porteiro (all independent non-executive directors), Ignacio Salazar (Chief Financial Officer) and David Fowler (Chief Executive).

Save as disclosed in the Appendix below, there is no other information required to be disclosed under Schedule Two, paragraph (g) of the AIM Rules for Companies.

Appendix

Information provided in accordance with paragraph (g) of Schedule 2 to the AIM rules:

1. Details of full name and age: Mr. Anthony Presley (formerly Patrick) Shearer, aged 63

2. Names of all companies and partnerships of which the director has been a director or partner at any time in the previous five years, indicating whether or not the director is still a director or partner:

Current

Abbey Protection PLC

Genesis Nanotechnologies Europe Limited

Sanctuary Partners Limited

Triple Plate Junction PLC

Updata Limited

Former

Caxton FX Limited

Gees Haulage Limited

Harvard International PLC

IMAS Corporate Advisors Limited

Jerrold Holdings Limited

UK Portfolio Management Limited

UK Wealth Management Limited

Uruguay Mineral Exploration Limited, Inc. (Orosur Mining, Inc.)

Voyager Prepaid Limited

Wogen PLC

69 Holland Road Limited

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).