FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of February 2010

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 o

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 o No x

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

Compañia de Minas Buenaventura Announces

Fourth Quarter 2009 Results

Lima, Peru, February 25, 2010 – Compañia 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 today its results for the fourth quarter 2009. All figures have been prepared according to Peruvian GAAP and are stated in U.S. dollars (US$).

Comments from the Chief Executive Officer:

Mr. Roque Benavides, Buenaventura’s Chief Executive Officer stated:

“Net income during the fourth quarter totaled US$210.4 million, a significant improvement when compared to the loss reported in 4Q08 (negative US$6.1 million).

EBITDA from Buenaventura’s Direct Operations was US$116.9 million, 295% higher than the figure reported in 4Q08 (US$29.6 million), while EBITDA including Yanacocha and Cerro Verde increased 392%, from US$73.0 million in 4Q08 to US$359.0 million in 4Q09.

These positive results were mainly driven by higher revenues due to the increases in metal prices, as well as Yanacocha and Cerro Verde’s contributions.”

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 2 of 14

Financial Highlights (in millions of US$, except EPS figures):

	4Q09	4Q08	Var%			FY09		FY08			Var%
Total Revenues	261.0	165.2		58	%		881.5		815.4			8	%
Operating Income	93.9	16.9		456	%		287.2		283.7	**		1	%
EBITDA (BVN Direct Operations)	116.9	29.6		295	%		393.1		357.7	**		10	%
EBITDA (inc. Yanacocha and Cerro Verde)	359.0	73.0		392	%		1162.7		950.1	**		22	%
Net Income	210.4	-6.1	NA				593.6		153.3			287	%
EPS*	0.83	-0.02	NA				2.33		0.60			287	%

(*) Buenaventura has a total of 254,442,328 shares outstanding.

(**) Without considering the provisions related to the unwinding of hedging contracts.

Operating Revenue

During 4Q09, net sales were US$243.5 million, a 57% increase when compared to the US$155.0 million reported in 4Q08. This was explained by higher realized prices in all metals despite a decrease in the volume of gold, silver, zinc and lead sold.

Royalty income during 4Q09 totaled US$17.5 million, a 72% increase when compared to the US$10.2 million reported in 4Q08 due to higher sales at Yanacocha.

Operating Highlights	4Q09	4Q08	Var%			FY09		FY08		Var%
Net Sales (in millions of US$)	243.5	155.0		57	%		819.4		766.6		7	%
Average Realized Gold Price Gold (US$/oz)*	1,122	801		40	%		988		872		13	%
Average Realized Gold Price (US$/oz) inc. Yanacocha	1,108	803		38	%		978		874		12	%
Average Realized Silver Price (US$/oz)*	17.65	10.12		74	%		15.52		14.26		9	%
Average Realized Lead Price (US$/MT)*	2,321	1,237		88	%		1,926		1,859		4	%
Average Realized Zinc Price (US$/MT)*	2,207	1,184		86	%		1,757		1,798		-2	%
Average Realized Copper Price (US$/MT)*	6,650	3,291		102	%		5,641		5,771		-2	%

(*) Buenaventura’s Direct Operations

Sales Content
	4Q09	4Q08	Var%			FY09		FY08		Var%
Gold (in oz)*	112,702	132,392		-15	%		419,222		414,682		1	%
Gold (in oz) inc. Yanacocha	335,459	321,137		4	%		1,321,993		1,218,976		8	%
Silver (in oz)*	3,721,247	3,901,471		-5	%		15,208,726		16,514,171		-8	%
Lead (in MT)*	8,085	9,693		-17	%		30,214		37,853		-20	%
Zinc (in MT)*	15,816	20,780		-24	%		64,198		82,501		-22	%
Copper (in MT)*	2,210	2,084		6	%		7,677		7,763		-1	%

(*) Buenaventura’s Direct Operations

Net sales for 2009 were US$819.4 million, a 7% increase compared to 2008 (US$766.6 million), while royalty income was US$62.2 million, a 27% increase when compared to the US$48.8 million reported in 2008.

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 3 of 14

Production and Operating Costs

Buenaventura’s equity production1 during 4Q09 was 113,827 ounces of gold, 1% higher than the 113,068 million ounces reported in 4Q08. Silver production during 4Q09 was 3.5 million ounces, a 12% decrease when compared to the 4.0 million ounces reported in 4Q08.

Equity production1 for the twelve month 2009 period was 424,731 ounces of gold and 14.8 million ounces of silver. This represented stable gold production (422,732 ounces in 2008), and a 6% decrease in silver production compared to 2008 (15.6 million ounces).

Equity Production1
	4Q09	4Q08	Var%			FY09		FY08		Var%
Gold (oz)	113,827	113,068		1	%		424,731		422,732		0	%
Gold (oz) inc. Yanacocha	331,516	296,105		12	%		1,323,127		1,212,945		9	%
Silver (oz)	3,538,286	4,025,616		-12	%		14,759,846		15,624,748		-6	%
Lead ( MT)	4,927	5,721		-14	%		20,752		23,651		-12	%
Zinc ( MT)	9,687	9,858		-2	%		40,959		41,867		-2	%
Copper (MT) inc. Cerro Verde	15,263	16,381		-7	%		61,613		64,349		-4	%

Orcopampa’s (100%) total gold production was 87,748 ounces, 12% higher than 4Q08 production (78,459 ounces). Production from the Chipmo mine in 4Q09 was 77,624 ounces, 11% higher than the 70,155 ounces reported in 4Q08, complemented by old tailings treatment, which produced 10,124 gold ounces. Accumulated total gold production for 2009 was 315,227 ounces, an 11% increase when compared to 2008 (284,511 ounces). (Appendix 2)

Cash operating cost in 4Q09 was US$322/oz, 22% higher when compared to 4Q08 (US$263/oz). This was explained by:

1.	A 53% increase in contractor costs due to a 39% increase in diamond drilling and a 43% increase in drifting work.

2.	A 23% increase in labor costs.

Cash operating cost for 2009 was US$290/oz, 19% higher than the figure reported in 2008 (US$244/oz).

At Poracota, gold production in 4Q09 was 13,474 ounces, a decrease of 2% when compared to 4Q08 (13,736 ounces), while the cash operating cost increased 69% from US$571/oz in 4Q08 to US$963/oz in 4Q09. This increase was due to a 125% increase in diamond drilling. Accumulated gold production for the twelve-month 2009 period was 51,516 ounces, 12% higher than the figure reported in 2008 (46,126 ounces).

Total royalties paid to the government at both Orcopampa and Poracota in 4Q09 was US$3.6 million.

At Uchucchacua (100%), total silver production during 4Q09 was 18% lower than 4Q08 (2,497,134 ounces and, 3,034,526 ounces, respectively) due to a 6% decline in ore treated and 12% lower silver grade. Zinc production decreased 46% (from 2,861 MT in 4Q08 to 1,551 MT in 4Q09), while lead production decreased 48% (1,445 MT in 4Q09 vs. 2,774 MT in 4Q08). Accumulated production for 2009 was 10,555,566 ounces of silver, 8% lower than in 2008 (11,417,199 ounces); 8,209 MT of zinc, a decrease of 27% when compared to 2008 (11,300 MT) and 8,548 MT of lead, 23% lower than the figure reported in 2008 (11,101 MT).

1 Production includes 100% of operating units, 100% of CEDIMIN and 45.97% of El Brocal.

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 4 of 14

Cash operating cost in 4Q09 was US$11.61/oz, a 60% increase compared to the $7.25/oz in 4Q08. This was best explained by:

28% lower by-product contribution due to a decrease in zinc and lead production.

An 82% rise in contractor expenses explained by a 19% increase in diamond drilling and a 12% increase in drifting work.

The decrease in silver ounces recovered was due to the previously mentioned decline in silver grade, while controlling manganese recovery and content.

Total royalties paid to the government at Uchucchacua in 4Q09 was US$1.3 million.

At Antapite (100%), total production in 4Q09 was 7,574 ounces of gold, a decrease of 17% compared to 4Q08 (9,130 ounces), mainly due to a 29% decrease in ore milled despite a 13% increase in the gold grade and 3% increase in the recovery rate (Appendix 2). Accumulated 2009 gold production was 31,004 ounces, a 28% decrease when compared to 2008 (43,319 oz).

Gold cash operating cost in 4Q09 was US$881/oz, 15% higher than 4Q08 (US$755/oz) due to the impact of a reduction in the amount of ounces recovered. The 14% increase in gold grade and higher recovery did not offset the lower tonnage treated. For 2009, cash operating cost was US$784/oz, 23% higher than in 2008 (US$637/oz)

Total royalties paid to the government at Antapite in 4Q09 was US$0.1 million.

At Colquijirca (El Brocal 45.97%), total zinc production was 16,872 MT in 4Q09, an 9% decrease when compared to the 18,612 MT reported in 4Q08 due to 9% decline in tonnage treated and a 4% decrease in ore grade despite a 2% decrease in the recovery rate (Appendix 2). Total silver production during 4Q09 was 880,865 ounces, a 5% increase when compared to the 841,744 ounces reported in 4Q08, mainly explained by a 14% increase in the silver ore grade despite a 9% decrease in the tonnage treated. Total lead production for 4Q09 was 5,614 MT, a 5% decrease when compared to 5,939 MT in 4Q08.

For 2009, total zinc production was 67,690 MT, a 17% decrease when compared to the 81,630 MT reported in 4Q08. In the case of silver, total production decreased 19%, from 4,493,191 ounces in 2008 to 3,651,041 ounces in 2009. Lead production for the twelve-month 2009 period was 20,135 MT, 19% lower than the same period in 2008 (24,963 MT).

Zinc cash cost in Colquijirca increased from US$626/MT in 4Q08 to US$1,083/MT in 4Q09. This was due to a higher stripping ratio (10.55 in 4Q09 vs. 3.03 in 4Q08) despite the higher zinc and lead contributions due to an increase in prices.

At Marcapunta, copper production for 4Q09 was 1,941 MT, 7% lower than 4Q08 (2,090 MT). Accumulated copper production in 2009 was 8,284 MT, an 11% increase when compared to 7,496 MT in 2008.

Total royalties paid to the government at Colquijirca in 4Q09 was US$1.6 million.

Operating Expenses

General and administrative expenses for 4Q09 were US$18.8 million, higher than the figure reported in 4Q08 (negative US$5.7 million) due to the reverse adjustment of the long-term compensation provision (negative US$15.3 million) reported in the comparable period of 2008. General and administrative expenses for the twelve-month period 2009 totaled US$88.8 million, a 154% increase when compared to the US$34.9 million reported in 2008 due to the US$16.8 million in doubtful accounts related to Doe Run, as well as the reverse adjustment of the long-term compensation provision (negative US$21.7 million) reported in 2008.

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 5 of 14

Exploration Costs in non-operational mining sites

Exploration costs at non-operational mining sites, which include care and maintenance during 4Q09 were US$5.7 million, a 59% decrease compared to the US$14.1 million reported in 4Q08. The main efforts were focused at the Breapampa (US$1.2 million), Trapiche (US$1.0 million), Marcapunta (US$0.9 million) and Mallay (US$1.7 million) projects. Exploration costs at non-operating mining sites during 2009 were US$30.0 million, a 46% decrease when compared to 2008 (US$55.2 million).

First-stage diamond drilling totaling 24,000m is complete at Chucapaca. Results are sufficiently encouraging to warrant mine initiation and a scoping study is scheduled for completion by July 2010. Insufficient drilling has been done to establish a definitive gold grade for the Canahuire deposit, but indications are that it will be economically viable. Portions of the Canahuire deposit are copper-bearing, but low-grade. Metallurgical test work is ongoing with encouraging initial results for combined floatation and CIL cyanidation.

Exploration at the Cerro Castrejón target, 7 km southwest of the La Zanja open pit/heap leach project, is at a very early stage with 2,500m of diamond drilling completed. However, despite a limited amount of work, it is clear that the La Zanja joint venture has discovered a molybdenum and copper deposit of significant size and grade. Mineralization is sulfide dominant hosted by a tourmaline breccia pipe with dimensions of 200mx300m, with a 300m to 400m vertical extension.

At Breapampa Buenaventura has excercised its US$ 15 million option to buy-out Newmont. Buenaventura is in the process of analyzing the feasibility of completing an environmental impact study and construction permits by the end of 2010. The first open pit/heap leach operation will be initiated thereafter at one of the three small oxide gold deposits in these highly prospective 93,400 hectares of mining rights. The Parcca Orcco deposit has in-pit probable reserves of 4.7 Mt @ 1.3 g/t gold and 22.2 g/t silver

At Trapiche, Buenaventura was able to report 552 Mt in total resources with 0.46% copper and 0.013% molybdenum amenable for conventional flotation for both the primary and enriched sulfides. Test results show concentrate grades between 22% and 30% copper with recoveries that fluctuate between 75% and 82%.

Tuyumina is a Cedimin prospect located 20 km East of the Paula mine. Two new veins were discovered with a discontinuous outcrop exceeding 5 km in the N 70° E direction. Prospecting in the central area began with trenches in late 2009; the veins exposed are 2m to 3m wide and show typical quartz-adularia low sufidation assemblages. The Olivia vein has a 100m central zone with 6 g/t to 30 g/t gold and 4 oz/t to 25 oz/t silver. The Company is currently evaluating depth potential with two diamond drilling rigs.

Operating Income

Operating income in 4Q09 was US$93.9 million, a 456% increase compared to the US$16.9 million reported in 4Q08. This result was mainly explained by the 58% increase in total revenues, from US$165.2 million in 4Q08 to US$261.0 million in 4Q09.

Accumulated operating income for 2009 was US$287.2 million, in-line with the figure reported in 2008 (US$283.7 million).

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 6 of 14

Share in Affiliated Companies

During 4Q09, Buenaventura’s income from non-consolidated affiliates was US$147.6 million, 590% higher than the US$21.4 million reported in 4Q08. Yanacocha’s contribution to these results increased 160%, from US$38.4 million in 4Q08 to US$99.7 million 4Q09, while contributions from Cerro Verde increased from negative US$17.0 million in 4Q09 to US$47.9 million in 4Q08. Accumulated income from non-consolidated affiliates in 2009 was US$451.3 million, an increase of 32% compared to the US$340.9 million reported in 2008.

YANACOCHA

At Yanacocha (43.65%), 4Q09 gold production was 498,716 ounces of gold, an increase of 19% compared to 4Q08 (419,329 ounces). Gold production for the twelve-month 2009 period was 2,058,180 ounces, an increase of 14% compared to the 1,810,338 ounces reported in the same period of 2008.

Cost applicable to sales (CAS) at Yanacocha in 4Q09 was US$319/oz, 10% lower than the figure reported in 4Q08 (US$356/oz). For 2009, CAS was US$325/oz, a 9% decrease when compared to US$358/oz reported in 2008.

Net income at Yanacocha during 4Q09 was US$228.5 million, a 154% increase when compared to the 4Q08 figure (US$90.1 million). Accumulated net income in 2009 was US$727.1 million, 53% higher than in 2008 (US$476.5 million).

During 4Q09, EBITDA totaled US$374.1 million, an increase of 135% compared to 4Q08 (US$159.4 million). This increase was due to a 62% increase in revenues (US$561.9 million in 4Q09 vs. US$347.6 million in 4Q08) due to an 18% increase in ounces of gold sold and the 37% increase in realized gold prices. EBITDA for 2009 was US$1,232.6 million, a 45% increase when compared to the US$849.2 million reported in 2008.

CAPEX for 4Q09 was US$52.9 million and US$146.5 million for 2009.

CERRO VERDE

At Cerro Verde (19.26%), 4Q09 copper production was 74,611 MT, a 7% decrease when compared to 4Q08 (79,894 MT). Copper production in 2009 totaled 300,109 MT, 5% lower than the figured reported in 2008 (315,014 MT).

During 4Q09, Cerro Verde reported net income of US$244.6 million compared to a negative US$100.4 million reported in 4Q08.

Accumulated net income in 2009 was US$708.5 million, a 1% decrease compared to 2008 (US$718.4 million), while sales totaled US$1,757.5 million, a decrease of 4% compared to 2008 (US$1,835.9 million).

CAPEX in 4Q09 totaled US$17.0 million and US$91.9 million for 2009.

Net Income

This quarter, Buenaventura’s net income was US$210.4 million, representing US$0.83 per share compared to negative US$6.1 million in 4Q08 (negative US$0.02 per share). This was mainly explained by the 590% increase in contributions from Yanacocha and Cerro Verde.

Net income in 2009 was US$593.6 million (US$2.33 per share) compared to the US$153.3 million (US$0.60 per share) reported in 2008.

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 7 of 14

Project Development

ORCOPAMPA

•

Mine hoist renewal in the Chipmo area to transport ore from lower levels of the mine that will permit mining cost reductions. CAPEX US$3.3 million.

•

2nd stage old tailings retreatment to recover 38,000 oz of gold and 1.1 M oz of silver. CAPEX US$5.5 million.

•

Tailing Dam #4 expansion for an additional 1.8 years. CAPEX US$10.4 million.

UCHUCCHACUA

•

Mine hoist renewal in the Carmen mine to transport ore from lower levels of the mine that will permit mining cost reductions. CAPEX US$4.2 million.

•

Improving the pumping system to avoid floods. CAPEX US$2.2 million.

•

Leaching plant work to incorporate into reserves current ore resources with manganese content and increase production moving forward.

COLQUIJIRCA

•

Expansion of metallurgical facilities to increase plant capacity from 6,000 TPD to 18,000 TPD, which considers the construction of a new tailing dam. CAPEX US$200 million.

HUANZA HYDROELECTRICAL PLANT

•

Construction of a 90 Mw hydroelectric plant to ensure energy supplies from a clean and renewal source for direct operations and projects. CAPEX US$145 million.

LA ZANJA

La Zanja started the construction of leaching pads and the Bramadero Dam on July 1, 2009. It is expected to initiate operations in July 2010. CAPEX US$55.5 million.

In 2009, project expenditures totaled US$22.0 million. The mine construction progress is summarized in the following chart:

Structure	Progress as of December 31, 2009
Waste Dam of San Pedro Sur Mine		21	%
Main Access		100	%
Processes Plant ADR		36	%
Leaching Platform		49	%
Solution and torment wells		77	%
Camps, Office, and General store		54	%
Supervision - EPCM		70	%

Board Resolutions

At the Board of Director’s meeting held February 25, 2010, the Board passed the following resolutions:

To call for the Annual Shareholders Meeting to be held March 26, 2010 to:

Approve the financial statements as of December 31, 2009

Approve the 2009 Annual Report

Approve a cash dividend of US$0.30 per share or ADS to be paid in U.S. currency.

* * *

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 8 of 14

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, Poracota, Uchucchacua, Antapite, Julcani, Recuperada and Caraveli). 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 2008 Form 20-F, please contact the persons indicated above.

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 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 and Yanacocha’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.

**Tables to follow**

APPENDIX 1

Equity Participation in Subsidiaries and Affiliates
	BVN		Operating
	Equity %		Mines / Business
Cedimin S.A.C*		100.00	Shila / Paula
Consorcio Energetico de Huancavelica S.A*		100.00	Energy
Buenaventura Ingenieros S.A*		100.00	Engineering Consultant
Minera La Zanja S.A*		53.06	La Zanja
Sociedad Minera El Brocal S.A.A*		45.97	Colquijirca and Marcapunta Project
Minera Yanacocha S.R.L **		43.65	Yanacocha
Sociedad Minera Cerro Verde S.A.A **		19.26	Cerro Verde

(*)Consolidates

(**) Equity Accounting

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 9 of 14

APPENDIX 2

	GOLD PRODUCTION
	Three Months Ended December 31																		Twelve Months Ended December 31
	Orcopampa									Orcopampa Old Tailings									Orcopampa									Orcopampa Old Tailings
	2009			2008			%			2009			2008			%			2009			2008			%			2009			2008			%
Ore Milled DST		128,223			126,922			1	%		131,581			141,585			-7	%		484,617			483,375			0	%		527,767			203,684			159	%
Ore Grade OZ/ST		0.63			0.58			8	%		0.09			0.07			22	%		0.60			0.59			3	%		0.08			0.07			12	%
Recovery Rate %		96.4	%		95.6	%		1	%		81.6	%		83.7	%		-3	%		95.7	%		95.5	%		0	%		80.7	%		82.2	%		-2	%
Ounces Produced		77,624			70,155			11	%		10,124			8,304			22	%		279,095			273,063			2	%		36,132			11,448			216	%

Orcopampa Total Production

4q09

87,748

4q08

78,459

fy09

315,227

fy08

284,511

	Three Months Ended December 31																		Twelve Months Ended December 31
	Antapite									Poracota									Antapite									Poracota
	2009			2008			%			2009			2008			%			2009			2008			%			2009			2008			%
Ore Milled DST		35,770			50,431			-29	%		64,107			61,600			4	%		140,782			207,014			-32	%		244,448			184,188			33	%
Ore Grade OZ/ST		0.22			0.19			14	%		0.27			0.27			0	%		0.23			0.22			5	%		0.26			0.30			-13	%
Recovery Rate %		96.2	%		93.5	%		3	%		78.2	%		82.6	%		-5	%		95.1	%		94.1	%		1	%		80.8	%		83.5	%		-3	%
Ounces Produced		7,574			9,131			-17	%		13,474			13,736			-2	%		31,004			42,890			-28	%		51,516			46,125			12	%

	SILVER PRODUCTION
	Three Months Ended December 31																		Twelve Months Ended December 31
	Uchucchacua									Colquijirca									Uchucchacua									Colquijirca
	2009			2008			%			2009			2008			%			2009			2008			%			2009			2008			%
Ore Milled DST		248,400			265,119			-6	%		485,451			530,992			-9	%		1,019,931			950,740			7	%		1,940,116			2,028,588			-4	%
Ore Grade OZ/ST		13.78			15.61			-12	%		2.79			2.44			14	%		14.00			16.00			-12	%		2.92			3.38			-14	%
Recovery Rate %		72.8	%		73.3	%		-1	%		65.0	%		65.3	%		0	%		73.9	%		74.2	%		0	%		64.4	%		65.4	%		-2	%
Ounces Produced		2,497,133			3,034,526			-18	%		880,865			841,744			5	%		10,555,566			11,417,199			-8	%		3,651,041			4,493,191			-19	%

	ZINC PRODUCTION
	Three Months Ended December 31																		Twelve Months Ended December 31
	Uchucchacua									Colquijirca									Uchucchacua									Colquijirca
	2009			2008			%			2009			2008			%			2009			2008			%			2009			2008			%
Ore Milled DST		248,400			265,118			-6	%		485,451			530,992			-9	%		248,400			950,740			-74	%		1,940,116			2,028,588			-4	%
Ore Grade %		1.29	%		1.86	%		-31	%		5.28	%		5.48	%		-4	%		1.56	%		1.98	%		-21	%		5.33	%		6.10	%		-13	%
Recovery Rate %		55.2	%		66.9	%		-17	%		72.6	%		70.6	%		3	%		57.3	%		63.3	%		-10	%		72.2	%		76.8	%		-6	%
ST Produced		1,709			3,154			-46	%		18,598			20,516			-9	%		9,049			12,456			-27	%		74,615			89,982			-17	%

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 10 of 14

APPENDIX 3

RESERVES AS OF DECEMBER 31, 2009

PROVEN AND PROBABLE

GOLD	%									BVN
	Ownership			ST (000)		Oz / ST		Oz (000)		Oz (000)
Orcopampa		100	%		1,061		0.613		650		7
Julcani		100	%		313		0.037		12		0
Shila - Paula		100	%		37		0.644		24		0
Antapite		100	%		26		0.309		8		0
Ishihuinca		100	%		19		0.375		7		0
Poracota		100	%		235		0.377		88		1
Yanacocha		43.65	%		307,282		0.034		10,526		46
Yanacocha (Conga)		43.65	%		617,787		0.019		11,836		52
El Brocal (Marcapunta Norte) Sulfides		45.97	%		7,936		0.013		102		0
La Zanja		53.06	%		36,296		0.020		726		4
Tantahuatay Oxides		40	%		27,592		0.024		659		264
Total Gold Reserves					998,584		0.025		24,638		374

SILVER	%									BVN
	Ownership			ST (000)		Oz / ST		Oz (000)		Oz (000)
Orcopampa		100	%		1,061		0.30		318		318
Poracota		100	%		235		0.15		35		35
Uchucchacua (Plata - Sulfides)		100	%		3,672		14.69		53,948		53,948
Uchucchacua (Zinc - Sulfides)		100	%		702		5.71		4,005		4,005
Uchucchacua (Plata - Oxides)		100	%		192		22.42		4,295		4,295
Julcani		100	%		313		19.75		6,177		6,177
Recuperada		100	%		469		5.30		2,483		2,483
Antapite		100	%		26		0.44		11		11
Shila - Paula		100	%		37		1.70		63		63
Pozo Rico		100	%		18		17.37		319		319
El Brocal (Tajo Norte - La Llave)		45.97	%		47,028		1.24		58,449		26,869
El Brocal (Marcapunta Norte) Sulfides		45.97	%		7,936		0.48		3,816		1,754
Cerro Verde (Sulfides) (e)		19.26	%		3,096,454		0.06		198,173		38,168
La Zanja		53.06	%		36,296		0.51		18,475		9,803
Tantahuatay Oxides		40	%		27,592		0.28		7,770		3,108
Total Silver Reserves					3,222,031		0.11		358,338		151,357

ZINC	%									BVN
	Ownership			ST (000)		% Zn		ST (000)		ST (000)
Uchucchacua (Plata - Sulfides)		100	%		3,672		1.89		69		69
Uchucchacua (Zinc - Sulfides)		100	%		702		6.28		44		44
Recuperada		100	%		469		6.80		32		32
Pozo Rico		100	%		18		0.92		0		0
El Brocal (Tajo Norte - La Llave)		45.97	%		47,028		2.60		1,223		562
Total Zinc Reserves					51,889		2.64		1,368		708

LEAD	%									BVN
	Ownership			ST (000)		% Pb		ST (000)		ST (000)
Uchucchacua (Plata - Sulfides)		100	%		3,672		1.39		51		51
Uchucchacua (Zinc - Sulfides)		100	%		702		4.68		33		33
Julcani		100	%		313		1.40		4		4
Recuperada		100	%		469		5.00		23		23
Pozo Rico		100	%		18		0.49		0		0
El Brocal (Tajo Norte - La Llave)		45.97	%		47,028		0.86		404		186
Total Lead Reserves					52,202		0.99		516		298

COPPER	%									BVN
	Ownership			ST (000)		% Cu		ST (000)		ST (000)
Julcani		100	%		313		0.54		2		2
Cerro Verde (Sulfides)		19.26	%		3,096,454		0.43		13,315		2,564
Cerro Verde (Oxides)		19.26	%		268,719		0.40		1,075		207
Yanacocha (Conga)		43.65	%		617,787		0.26		1,613		704
El Brocal (Marcapunta) Sulfides		45.97	%		7,936		2.55		202		93
Total Copper Reserves					3,990,896		0.41		16,205		3,568

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 11 of 14

APPENDIX 4

Compañía de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Balance sheet

As of December, 31 2009 and 2008

	2009			2008			2008
	US$(000)			US$(000)			US$(000)
Assets
Current assets
Cash, banks and time deposits		714,454			554,752			554,752
Trade accounts receivable, net		122,950			65,666			65,666
Embedded derivatives for concentrates sales		4,838			-			-
Other accounts receivable, net		14,346			23,248			23,248
Accounts receivable from associates		21,866			13,111			13,111
Current portion of hedge derivative financial instruments					52,873			52,873
Inventory, net		44,987			43,489			43,489
Current portion of prepaid taxes and expenses		14,368			35,573			35,573
Total current assets		937,809			788,712			788,712

Other long - term accounts receivable		1,457			1,370			1,370
Prepaid taxes and expenses		10,787			5,622			5,622
Hedge derivative financial instruments					21,464			21,464
Investment in associates		1,126,167			882,947			882,947
Mining concessions and property, plant and equipment, net		351,784			257,795			257,795
Development costs, net		91,633			99,937			99,937
Deferred income tax and workers’ profit sharing asset		261,877			242,148			242,148
Other assets		5,045			1,929			1,929
Total assets		2,786,559			2,301,924			2,301,924

Liabilities and shareholders’ equity, net
Current liabilities
Trade accounts payable		58,233			36,589			36,589
Income tax payable		20,528			4,561			4,561
Current portion of other liabilities		87,125			64,817			64,817
Embedded derivatives for concentrates sales		292			9,953			9,953
Hedge derivative financial instruments		1,468
Current portion of long - term debt		79,452			98,190			98,190
Total current liabilities		247,098			214,110			214,110

Other long term liabilities		102,053			88,981			88,981
Hedge derivative financial instruments		5,375
Deferred income tax and workers’ profit sharing liabilities		18,158			32,981			32,981
Long term debt		150,555			229,105			229,105
Total liabilities		523,239			565,177			565,177

Shareholders’ equity net

Capital stock, net of treasury shares of US$62,622,000 in the year 2009 y 2008		750,540			750,540			750,540
Investments shares, net of treasury shares of US$142,000 in the year 2009 y 2008		2,019			2,019			2,019
Additional paid-in capital		225,978			225,978			225,978
Legal reserve		112,363			53,007			53,007
Other reserves		269			269			269
Retained earnings		1,011,077			517,583			517,583
Cumulative translation loss		(34,075	)		(34,075	)		(34,075	)
Unrealized (loss) gain on valuation of hedge derivative financial instruments, net		(4,591	)		16,162			16,162
Unrealized gain on other investments		675			118			118
		2,064,255			1,531,601			1,531,601
Minority interest		199,065			205,146			205,146
Total shareholders’ equity, net		2,263,320			1,736,747			1,736,747

Total liabilities and shareholders’ equity, net		2,786,559			2,301,924			2,301,924

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 12 of 14

Compañía de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Statements of income

For the three and twelve month period ended December 31, 2009 and 2008

	For the three month period						For the twelve month period
	ended December, 31						ended December, 31
	2009			2008			2009			2008
	US$(000)			US$(000)			US$(000)			US$(000)
Operating income
Net sales		243,498			155,002			819,357			766,603
Royalty income		17,509			10,183			62,150			48,760
Total income		261,007			165,185			881,507			815,363

Operating costs
Cost of sales, excluding depreciation and amortization		81,892			70,860			280,342			251,804
Exploration in units in operation		20,493			16,340			68,649			57,003
Depreciation and amortization		19,830			22,165			73,536			62,993
Total operating costs		122,215			109,365			422,527			371,800
Gross income		138,792			55,820			458,980			443,563

Operating expenses
General and administrative		18,837			(5,708	)		88,760			34,907
Exploration in non-operating areas		5,737			14,076			30,005			55,231
Royalties		13,813			9,124			39,646			35,694
Impairment of long-lived assets		3,325			18,610			3,325			18,610
Sales		3,148			2,814			10,047			15,386
Total operating expenses		44,860			38,916			171,783			159,828

Operating income before unusual item		93,932			16,904			287,197			283,735
Net loss on release of commitment
related to commercial contracts		-			-			-			(415,135	)

Operating income (loss) after unusual item		93,932			16,904			287,197			(131,400	)

Other income (expenses), net
Share in affiliated companies, net		147,555			21,381			451,306			340,929
Interest income		1,000			4,966			6,117			17,851
Interest expense		(2,085	)		(7,667	)		(15,090	)		(33,934	)
Gain (loss) on currency exchange difference		(1,193	)		(5,960	)		1,457			(12,198	)
Other, net		(44	)		(13,340	)		2,553			(9,290	)
Total other income (loss), net		145,233			(620	)		446,343			303,358

Income before workers’ profit sharing, income tax
and minority interest		239,165			16,284			733,540			171,958

Provision for workers’ profit sharing, net		418			(7,633	)		(12,592	)		4,725
Provision for income tax, net		(4,699	)		(14,589	)		(64,340	)		26,645

		234,884			(5,938	)		656,608			203,328

Net income attributable to minority interest		(24,477	)		(122	)		(63,047	)		(50,045	)

Net income attributable to Buenaventura		210,407			(6,060	)		593,561			153,283

Net income per basic and diluted share, stated in
U.S. dollars.		0.83			(0.02	)		2.33			0.60

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 13 of 14

Compañía de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Statements of cash flows

For the three and twelve month period ended December 31, 2009 and 2008

	For the three month period ended						For the twelve month period ended
	December, 31						December, 31
	2009			2008			2009			2008
	US$(000)			US$(000)			US$(000)			US$(000)
Operating activities
Proceeds from sales		191,216			203,372			738,501			781,116
Dividens received		108,808			126,585			213,845			413,602
Royalties received		15,987			12,625			52,474			50,550
Tax recovered		1,910			-			32,387			-
Release of commitments in commercial contracts		-			-			-			(517,143	)
Interest received		1,063			5,926			6,698			18,461
Payments to suppliers and third parties		(44,632	)		(55,780	)		(247,686	)		(270,206	)
Payments to employees		(17,378	)		(24,519	)		(94,906	)		(111,110	)
Payments for exploration		(26,230	)		(29,816	)		(92,479	)		(105,367	)
Payment of royalties		(12,536	)		(11,144	)		(39,416	)		(41,401	)
Income tax paid		(13,435	)		(4,640	)		(37,105	)		(41,360	)
Payments of interest		(1,800	)		(7,682	)		(10,876	)		(26,622	)
Net cash and cash equivalents provided by
(used in) operating activities		202,973			214,927			521,437			150,520

Investment activities
Decrease in time deposit		20,361			18,542			22,725			56,023
Settlement of escrow account					177,811						177,811
Disbursements for escrow account		-			(113,716	)		-			(177,811	)
Additions to mining concessions, property, plant and equipment		(114,925	)		(11,349	)		(152,177	)		(61,175	)
Acquisition of investments		(124	)		(14,949	)		(37,936	)		(29,541	)
Collections from sales of equipment		49						410			754
Disbursements for development activities		32,962			(15,577	)		(10,969	)		(41,950	)
Other investment activities		4,503			(200	)		4,692			(481	)

Net cash and cash equivalents used in invesment activities		(57,174	)		40,562			(173,255	)		(76,370	)

Financing activities
Proceeds from long-term debt		-			-			-			450,000
Proceeds from bank loans		-			-			-			510,000
Payments of bank loans		-			-			-			(510,000	)
Payments of long-term debt		(23,685	)		(87,879	)		(97,288	)		(206,824	)
Dividens paid to minority shareholders of subsidiary		(4,210	)		(7,691	)		(27,756	)		(37,275	)
Dividens paid		(35,198	)		(20,568	)		(40,711	)		(50,888	)
Net cash and cash equivalents provided by
(used in) financing activities		(63,093	)		(116,138	)		(165,755	)		155,013

Net increase (decrease) in cash and cash equivalents during the period		82,706			139,351			182,427			229,163
Cash and cash equivalents at beginning of period		631,748			392,676			532,027			302,864

Cash and cash equivalents at period-end		714,454			532,027			714,454			532,027

Compañia de Minas Buenaventura S.A.A.

Fourth Quarter and Twelve-Months of 2009 Results

Page 14 of 14

	For the three month period ended						For the twelve month period ended
	December, 31						December, 31
	2009			2008			2009			2008
	US$(000)			US$(000)			US$(000)			US$(000)

Reconciliation of net income to cash and cash equivalents provided by
(used in) operating activities

Net income		210,407			(6,060	)		593,561			153,283
Add (less)
Depreciation and amortization		19,830			9,307			73,536			62,993
Net income attributable to minority interest		24,477			122			63,047			50,045
Provision for long term officers’ compensation		(213	)		(15,256	)		29,073			(7,678	)
Deferred income tax and workers' profit sharing benefit		(20,006	)		9,192			(5,653	)		(91,565	)
Allowance for doubtful trade accounts receivable		5,983						18,594			5,372
Accretion expense of the provision for closure of mining units		351			633			4,839			6,265
Interest payable provision
Net cost of plant and equipment retired
Share in associates companies, net of dividends received in cash		(38,747	)		105,204			(237,461	)		72,673
Provision for estimated fair value of embedded
derivatives related to sales of concentrates		(10,168	)		(2,440	)		(14,499	)		3,969
Loss (gain) on currency exchange differences		1,193			5,960			(1,457	)		12,198
Increase (decrease) of allowance for impairment of inventories		857			359			414			684
Increase (decrease) of allowance for impairment of long-lived assets		3,325			18,610			3,325			18,610
Adjustment for expense of the provision for closure of mining units
and exploration projects		455			13,066			455			13,066
Collections from sales of equipment		(61	)		2,238			462			2,534
Income from release of commitment related to commercial contracts											(102,008	)
Others		(1,862	)		3,735			(706	)		7,326

Net changes in operating assets and liabilities accounts

Decrease (increase) of operating assets
Trade accounts receivable		(39,530	)		76,768			(57,284	)		41,874
Other accounts receivable		12,525			(77	)		(16,193	)		(4,328	)
Accounts receivable from associate		(1,522	)		2,442			(9,676	)		1,790
Derivative financial instruments					(14,644	)					(14,644	)
Inventory		(617	)		3,009			(1,498	)		(8,323	)
Prepaid taxes and expenses		(6,309	)		2,794			16,040			(19,824	)

Increase (decrease) of operating liabilities
Trade accounts payable		11,107			(3,461	)		21,644			11,282
Income tax payable		4,765			(356	)		15,967			(10,788	)
Other liabilities		26,733			3,782			24,907			(54,286	)

Net cash and cash equivalents provided by
(used in) operating activities		202,973			214,927			521,437			150,520

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.

Compañía de Minas Buenaventura S.A.A.

/s/ CARLOS E. GALVEZ PINILLOS

Carlos E. Gálvez Pinillos

Chief Financial Officer

Date: February 25, 2010