July 3, 2008

Buenaventura Announces Stock Split

LIMA, Peru, July 3 /PRNewswire-FirstCall/ -- Compania de Minas Buenaventura S.A.A. (the "Company" or "Buenaventura") (NYSE: BVN; Lima Stock Exchange: BUE.LM), Peru's largest publicly-traded precious metals mining company announced that its Board of Directors has approved a two-for-one split of the Company's outstanding common shares, investment shares and American Depositary Shares ("ADSs").

The Board stated July 18, 2008 as record date (the ex-date is July 21, 2008). On July 22, 2008 ("the payable date") ADS holders will receive one additional ADS for each ADS held.

Company Description

Compania de Minas Buenaventura S.A.A. is Peru's largest, publicly-traded precious metals company and a major holder of mining rights in Peru. The Company is engaged in the mining, processing, development and exploration of gold and silver and other metals via wholly-owned mines as well as through its participation in joint exploration projects.

Buenaventura currently operates several mines in Peru (Orcopampa, Uchucchacua, Antapite, Julcani, Recuperada and Caraveli) and also has controlling interests in two mining companies (CEDIMIN and El Brocal) as well as a minority interest in several other mining companies in Peru. The Company owns 43.65% in Minera Yanacocha S.R.L. (a partnership with Newmont Mining Corporation), an important precious metal producer, and 18.50% in Sociedad Minera Cerro Verde, an important Peruvian copper producer.

To request a printed version of the Company's 2006 annual report on 20-F form contact the persons indicated above.

Cautionary Statement

This news release contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, that are intended to be covered by the safe harbor created by such sections. Such forward-looking statements include, without limitation, statements regarding future mining or permitting activities. Where Buenaventura expresses or implies an expectation or belief as to future events or results, such expectation or belief is expressed in good faith and believed to have a reasonable basis. However, forward-looking statements are subject to risks, uncertainties and other factors, which could cause actual results to differ materially from future results expressed, projected or implied by such forward-looking statements. Such risks include 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 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, legal and social developments. For a more detailed discussion of such risks and other factors, see the company's 2006 Annual Report on Form 20-F, which is on file with the Securities and Exchange Commission, as well as the company's other SEC filings. Buenaventura does not undertake any obligation to release publicly revisions to any "forward-looking statement," to reflect events or circumstances after the date of this news release, or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws.

   Contacts in Lima:   Roque Benavides / Carlos Galvez   Compania de Minas Buenaventura S.A.A.   Tel: (511) 419-2538 / 419-2540   Investor Relations: Daniel Dominguez   Tel: (511) 419-2536   Email: [email protected]    Contacts in New York:   Maria Barona / Peter Majeski   i-advize Corporate Communications, Inc.   Tel: (212) 406-3690   Email: [email protected]  

Compania de Minas Buenaventura S. A. A.

CONTACT: Roque Benavides +011-511-419-2538, or Carlos Galvez,+011-511-419-2540, Investors, Daniel Dominguez, +011-511-419-2536,[email protected], all of Compania de Minas Buenaventura S.A.A.;or Maria Barona or Peter Majeski, +1-212-406-3690,[email protected], both of i-advize Corporate Communications forCompania de Minas Buenaventura

Web site: http://www.buenaventura.com.pe/