Buenaventura currently operates several mines in Peru (Orcopampa*, Poracota*, Uchucchacua*, Antapite*, Julcani*, Recuperada*, El Brocal, La Zanja, Coimolache and CEDIMIN*).The Company owns 43.65% of Minera Yanacocha S.R.L. (a partnership with Newmont Mining Corporation), an important precious metal producer; 19.41% of Sociedad Minera Cerro Verde, an important Peruvian copper producer, and 49% of Canteras del Hallazgo S.A., owner the Chucapaca project. For a printed version of the Company’s 2011 Form 20-F, please contact the persons indicated above, or download a PDF format file from the Company’s web site. (*) Operations wholly owned by Buenaventura (1) First time adoption of International Financial Reporting Standards (“IFRS”) As part of the first adoption of the International Financial Reporting Standards (IFRS) in Peru, as of October 14, 2011, through Resolution N°102-2011-EF/94.01.1, the Superintendence of Securities Market (“SMV”, before CONASEV), required to all legal entities under its supervision to adopt IFRS since the year The first six-month period 2012. For periods up to and including the year ended December 31, 2011, the Company prepared its financial statements in accordance with Generally Accepted Accounting Principles in Peru (Peru GAAP). These consolidated financial statements, for the year ended December 31, The first six-month period 2012, are the first the Company has prepared in accordance with IFRS, in which the Company has applied IFRS 1 “First Time Adoption of International Financial Reporting Standard” in the opening balance as of January 1, 2011, transition date to IFRS. The IFRS 1 application implies that all the standards are apply retrospectively at the transition date, including certain mandatory exceptions and voluntary exemptions defined in the standard. Note on Forward-Looking Statements This press release may contain forward-looking information (as defined in the U.S. Private Securities Litigation Reform Act of 1995) that involve risks and uncertainties, including those concerning the Company’s, Yanacocha’s and Cerro Verde’s costs and expenses, results of exploration, the continued improving efficiency of operations, prevailing market prices of gold, silver, copper and other metals mined, the success of joint ventures, estimates of future explorations, development and production, subsidiaries’ plans for capital expenditures, estimates of reserves and Peruvian political, economical, social and legal developments. These forward-looking statements reflect the Company’s view with respect to the Company’s, Yanacocha’s and Cerro Verde’s future financial performance. Actual results could differ materially from those projected in the forward-looking statements as a result of a variety of factors discussed elsewhere in this Press Release.