SANTIAGO, Chile, March 4, 2013, Orosur Mining Inc (�OMI� or the �Company�) (TSX: OMI) (AIM: OMI), the South American focused gold explorer and producer, today announces the appointment of a new Non-Executive Director, Rafael Vergara, 49, who lives in Santiago, Chile.

Rafael Vergara is a partner of the Santiago law firm, Carey y C�a. and head of their Natural Resources, Energy and Environment Group. His practice focuses on natural resources, mining, water rights, energy, environment, surface lands, project financing, corporate/commercial, municipal and planning, health and medicines.

Since 1996, Mr. Vergara has been Professor of Mining Law at the Universidad de Chile, and from 2003 at the Universidad de Los Andes. He has given special courses on mining law organized by the Judiciary Academy of Chile, for judges and members of the Courts of Appeals. He has also presented papers on Chilean energy and natural resources regulations at numerous meetings, both in Chile and abroad. Currently he is member of the panel of the Arbitration Center of the Santiago Chamber of Commerce.

Mr. Vergara is also a member  of the Chilean Bar Association, of the legal committee of the National Mining Association (SONAMI), of the Inter-Pacific Bar Association, of the International Bar Association, of the Rocky Mountain Mineral Law Foundation, and of the informal association Abogados Mineros Latinoamericanos (AMLA).

Tony Shearer, Chairman, said: �I am delighted to welcome Rafael to the Board. He brings with him a wealth of expertise in mining and the law in South America, and will be an excellent addition to the Board as we focus on bringing value to shareholders.�

The Board of the Company now comprises Tony Shearer as Chairman with Rafael Vergara, Eric Roth, 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. Rafael Vergara, aged 49
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
Carey & Co. Abogados

Former
Sal Lobos S.A. (K+S Chilean affiliate)

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

Tony Shearer, Chairman
David Fowler, CEO
Ignacio Salazar, CFO + 562 9246800; info@orosur.ca

Canaccord Genuity Limited (Nominated Adviser & Joint Broker)

Andrew Chubb / Ross Allister, +44 (0) 20 7523 8000

Seymour Pierce (Joint Broker)

Stewart Dickson / Jeremy Stephenson +44 (0) 20 7107 8000