Buenaventura Provides Update on National Mining Federation Strike

LIMA, Peru, Oct. 19 /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 today that the National Mining Federation has organized a 48-hour strike affecting the Orcopampa and Uchucchacua mining units.

The Orcopampa mine has stopped mining activities. However, metallurgical operations, such as the treatment of previously prepared ore stockpiles, will continue. In the case of Uchucchacua, both mining and plant activities have stopped.

This strike is scheduled for 48 hours, and operations are expected to resume immediately after the conclusion of the national strike.

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 and also has controlling interests in four mining companies 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 19.22% in Sociedad Minera Cerro Verde, an important Peruvian copper producer.

To request a printed version of the Company's 2008 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: [phone]-2540 Investor Relations: Daniel Dominguez Tel: [phone] Email: [e-mail] Contacts in New York: Maria Barona/Peter Majeski i-advize Corporate Communications, Inc. Tel: [phone] Email: [e-mail]

Compania de Minas Buenaventura S.A.A.

CONTACT: In Lima: Roque Benavides, +011-511-419-2538, or Carlos Galvez,
+011-511-419-2540, or Investor Relations: Daniel Dominguez, +011-511-419-2536,
[e-mail], all of Compania de Minas Buenaventura; or in
New York: Maria Barona or Peter Majeski, [phone], buenaventura@i-
advize.com, both for Compania de Minas Buenaventura

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