Buenaventura Announces Third Quarter 2011 Conference Call

Compañía de Minas Buenaventura S.A.A. (“Buenaventura” or “the Company”) (NYSE: BVN; Lima Stock Exchange: BUE.LM), Peru’s largest publicly-traded precious metals mining company, announced that it will host its Third Quarter 2011 Conference Call Monday, October 31, 2011 at 11:00 am Eastern Time, 10:00 am Lima Time.

To participate, please dial:

[phone] (U.S. participants)[phone] (outside of the U.S.)Pass Code: 14677387

Buenaventura will release Third Quarter 2011 Results Friday, October 28, 2011 after the market close.

In addition, there will be a live webcast, which can be found at www.buenaventura.com, under the “Press Releases’ section.

The replay will be available through November 7, 2011 at 11:59 p.m. Eastern Time. To access the replay, please dial [phone] in the United States, or [phone] outside of the United States. The confirmation code is 14677387.

Company Description

Compañía 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, La Zanja, Uchucchacua, Antapite, Julcani and Recuperada), has controlling interest 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 19.26% in Sociedad Minera Cerro Verde, an important Peruvian copper producer.

To request a printed version of the Company’s 2010 annual report on Form 20-F, 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.

Copyright Business Wire 2010