<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>bm8411.txt
<DESCRIPTION>FORM 6-K
<TEXT>
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 6-K

                            Report of Foreign Issuer

                    Pursuant to Rule 13a-16 or 15d-16 of the
                         Securities Exchange Act of 1934
                                 January 3, 2007

                        BUENAVENTURA MINING COMPANY INC.
                 (Translation of Registrant's Name into English)

                               CARLOS VILLARAN 790
                          SANTA CATALINA, LIMA 13, PERU
                    (Address of Principal Executive Offices)

     Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F.

                           Form 20-F [x] Form 40-F [ ]

     Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

                                  Yes [ ]  No [x]

     If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b): 82-________________.

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<PAGE>

                                                           FOR IMMEDIATE RELEASE

                  CERRO VERDE'S $850 MILLION SULFIDE EXPANSION
                     OFFICIALLY COMMENCES COPPER PRODUCTION

                               Visit our website:
                           http://www.buenaventura.com

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: ddominguez@buenaventura.com.pe

CONTACTS IN NEW YORK:
Maria Barona / Peter Majeski
i-advize Corporate Communications, Inc.
Tel: (212) 406-3690
Email: buenaventura@i-advize.com

Lima, Peru, January 2, 2007 - 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 is pleased to share its
satisfaction with Cerro Verde's filing, before CONASEV, regarding the first
shipment from the $850 million sulfide expansion of copper concentrate
production. This shipment consisted of approximately 9,500 dry metric tons of
copper concentrate sold for processing to Sumitomo Metal Mining Co. Ltd., one of
the major shareholders of the Cerro Verde Mine.

With the expansion, Cerro Verde will triple annual production from approximately
100,000 tons of copper to 300,000 tons. The mine's life is expected to be
extended by approximately 26 years. The project was completed on time and within
the budget established for the project.

Via this expansion, approximately 1 billion tons of sulfide ore reserves
averaging 0.51 percent copper will be processed through a new concentrator. The
expansion also is expected to produce more than 2,000 tons of molybdenum per
year. Full production from the expansion is expected to be achieved during the
first half of 2007.

Buenaventura owns 18.5 percent of the Cerro Verde Mine, Phelps Dodge, the
operator, owns 53.6 percent, Sumitomo Metal Mining and Sumitomo Corp. together
own 21 percent, and other minority shareholders own the remaining 6.9 percent.

<PAGE>

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 three 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 18.50% in Sociedad Minera Cerro Verde, an important Peruvian
copper producer.

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 2003
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.

<PAGE>

                                    Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                                           Compania de Minas Buenaventura S.A.A.


                                           /s/ CARLOS E. GALVEZ PINILLOS
                                           -------------------------------------
                                           Carlos E. Galvez Pinillos
                                           Chief Financial Officer


Date: January 3, 2007
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