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 2013

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-________________.

	Buenaventura Announces Fourth Quarter and Full Year 2012 Results Lima, Peru, February 28, 2013 – 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 results for the fourth quarter 2012. All figures have been prepared in accordance with IFRS 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 in the fourth quarter was US$139.1 million, 39% lower than the figure reported in 4Q11 (US$227.9 million). EBITDA from Buenaventura’s Direct Operations was US$130.2 million, 32% lower than the figure reported in 4Q11 (US$192.1 million), while EBITDA including Affiliates decreased 33%, from US$421.7 million in 4Q11 to US$281.5 million in 4Q12. These results were mainly explained by lower volume of gold sold, higher operating costs, exploration efforts and decreased contributions from affiliates. Financial Highlights (in millions of US$, except EPS figures):
		4	Q12	4	Q11	Var%		FY 2012	FY 2011	Var%
	Total Revenues		424.2		402.3	5	%	1,563.5	1,556.6	0	%
	Operating Income		86.7		164.0	-47	%	418.2	704.4	-41	%
	EBITDA Direct Operations		130.2		192.1	-32	%	569.9	835.4	-32	%
	EBITDA Including Affiliates		281.5		421.7	-33	%	1,438.8	1,681.3	-14	%
	Net Income		139.1		227.9	-39	%	684.7	858.9	-20	%
	EPS *		0.54		0.90	-39	%	2.69	3.38	-20	%
	(*) As of December 31, 2012, Buenaventura had 254,232,571 shares outstanding. Within this release, Buenaventura presents financial measures in accordance with IFRS, as well as on a non-GAAP basis.

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 1 of 16

Operating Revenues

During 4Q12, net sales were US$411.6 million, a 7% increase compared to the US$385.0 million reported in 4Q11. This was explained by higher sales content of all metals, except gold.

Royalty income decreased 28% to US$12.6 million in 4Q12 from the US$17.4 million reported in 4Q11 due to lower revenues at Yanacocha.

Operating Highlights	4Q12	4Q11	Var%		FY 2012	FY 2011	Var%
Net Sales (in millions of US$)	411.6	385.0	7	%	1,496.3	1,493.9	0	%
Average Realized Gold Price Gold (US$/oz)*	1,713	1,690	1	%	1,679	1,574	7	%
Average Realized Gold Price (US$/oz) inc. Associates	1,714	1,684	2	%	1,669	1,577	6	%
Average Realized Silver Price (US$/oz)*	32.64	32.40	1	%	31.25	35.40	-12	%
Average Realized Lead Price (US$/MT)*	2,203	1,991	11	%	2,065	2,262	-9	%
Average Realized Zinc Price (US$/MT)*	1,947	1,905	2	%	1,919	2,200	-13	%
Average Realized Copper Price (US$/MT)*	7,899	7,524	5	%	7,937	8,568	-7	%

(*) Buenaventura’s Direct Operations

	Sales Content
		4Q12	4Q11	Var%		FY 2012	FY 2011	Var%
Gold Oz Direct Operations		92,454	122,833	-25	%	439,816	505,894	-13	%
Gold Oz inc Affiliates		212,469	270,728	-22	%	1,078,826	1,145,603	-6	%
Silver Oz		5,507,511	4,366,347	26	%	17,474,113	14,843,193	18	%
Lead MT		5,518	3,857	43	%	25,589	18,192	41	%
Zinc MT		5,267	4,041	30	%	43,180	33,307	30	%
Copper MT		12,028	7,516	60	%	22,373	23,231	-4	%

(*) Buenaventura’s Direct Operations

Accumulated net sales in 2012 were US$1,496.3 million, in-line with the figure reported in 2011, while royalty income was US$67.2 million, a 7% increase compared to the US$62.7 million reported in 2011.

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 2 of 16

Production and Operating Costs

Buenaventura’s equity production¹ in 4Q12 was 108,489 ounces of gold, 13% lower than the 124,504 ounces reported in 4Q11 mainly due to a decrease in Orcopampa production. Silver production, including affiliates, in 4Q12 was 4.6 million ounces, a 12% increase when compared to the figure reported in 4Q11 (4.1 million oz.).

Equity production¹ in 2012 was 446,443 ounces of gold and 18.3 million ounces of silver. This represented a 6% decrease in gold production (475,770 oz. in 2011), and a 12% increase in silver production compared to 2011 (16.2 million oz.).

	Equity Production 1
		4Q12	4Q11	Var%		FY 2012	FY 2011	Var%
Gold (oz) Direct Operations		108,489	124,504	-13	%	446,443	475,770	-6	%
Gold (oz) inc. Affiliates		211,448	270,659	-22	%	1,033,969	1,040,218	-1	%
Silver (oz) inc. Affiliates		4,593,711	4,107,467	12	%	18,262,156	16,243,279	12	%
Lead ( MT)		5,844	3,475	68	%	25,345	17,444	45	%
Zinc ( MT)		6,787	3,151	115	%	39,139	22,621	73	%
Copper (MT) inc. Affiliates		20,670	16,980	22	%	66,221	69,873	-5	%

Orcopampa’s (100% owned by Buenaventura) total gold production in 4Q12 was 59,779 ounces, 16% lower than the 71,296 ounces reported in 4Q11. Production from the Chipmo mine during 4Q12 was 55,652 ounces, 15% lower compared to the 65,788 ounces reported in 4Q11 due to a 9-day strike in October (See Appendix 2). The old tailings treatment produced 4,128 ounces of gold (compared to 5,508 oz. in 4Q11). Accumulated total gold production in 2012 was 260,378 ounces, a 9% decrease when compared to 2011 (285,201 oz.).

Cash operating cost in 4Q12 was US$714/oz., 51% higher when compared to 4Q11 (US$472/oz.). This was mainly explained by lower gold production and higher contractor expenses due to greater exploration efforts. Cash cost during 2012 was US$559/oz.

At Uchucchacua (100% owned by Buenaventura), total silver production in 4Q12 was 3.01 million ounces, 8% higher when compared to 2.79 million ounces in 4Q11 due to a 5% increase in the recovery rate (See Appendix 2). Zinc production in 4Q12 was 2,931 MT, 43% higher than the figure reported in 4Q11 (2,047 MT), while lead production increased 25% (2,556 MT in 4Q12 vs. 2,051 MT in 4Q11). During 2012, silver production was 11.3 million ounces; zinc production was 9,820 MT, while lead production was 8,742 MT vs. 10.1 million ounces, 6,668 MT and 7,546 MT, respectively, in 2011.

Cash operating cost in 4Q12 was US$16.57/oz., in-line with the figure reported in 4Q11 (US$16.35/oz.). Cash cost during 2012 was US$16.97/oz. (US$16.27/oz. in 2011).

At Julcani (100% owned by Buenaventura), total production in 4Q12 was 615,712 ounces of silver, 1% higher compared to 4Q11 (611,711 ounces). During 2012, silver production was 2.4 million ounces, similar to the figure reported in 2011.

Silver cash operating cost in 4Q12 was US$14.38/oz., 15% higher than 4Q11 (US$12.52/oz.), mainly due to an increase in energy supply expenses. Cash cost during 2012 was US$13.5/oz.

¹ Production from Direct Operations includes 100% of Buenaventura’s operating units, 100% of CEDIMIN, 53.06% of La Zanja, 40.04% of Tantahuatay and 53.76% of El Brocal.

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 3 of 16

Breapampa (100% owned by Buenaventura) commenced operations in November. Total production in 4Q12 was 8,817 ounces of gold.

La Zanja (53.06% owned by Buenaventura) total production in 4Q12 was 28,670 ounces of gold, a 13% decrease when compared to 4Q11 (32,857 oz.). Accumulated gold production in 2012 was 112,387 ounces, 16% lower than 2011 (134,190 oz.), but in-line with La Zanja’s mining plan.

Cash operating cost in 4Q12 was US$753/oz., 63% higher than 4Q11 (US$463/oz.) due to an increase in supply costs (mainly explained by an increase of reagent consumption and prices). Cash cost during 2012 was US$622/oz.

Tantahuatay (40.04% owned by Buenaventura) total production in 4Q12 was 35,340 ounces of gold (14,150 oz. attributable to Buenaventura). During 2012, gold production was 141,268 ounces (56,564 oz. attributable to Buenaventura). Cash operating cost in 4Q12 was US$393/oz and US$402/oz for 2012.

At El Brocal (53.76% owned by Buenaventura), total plant capacity was devoted to treat copper ores during 4Q12.

Copper production was 13,166 MT, 68% higher than the 7,852 MT reported in 4Q11. For 2012, copper production increased 2% (24,218 MT in 4Q12 versus 23,796 MT in 4Q11). Copper cash cost was US$5,198/MT, 26% higher than 4Q11 (US$4,135/MT).

Silver production decreased 56% from 420,329 ounces in 4Q11 to 185,231 ounces in 4Q12.

During 2012, total zinc production was 34,949 MT, a 48% increase when compared to the 23,675 MT reported in 2011. In the case of silver, total production increased 5%, from 2.9 million ounces in 2011 to 3.1 million ounces in 2012. Lead production was 12,329 MT in 2012, 30% higher than 2011 (9,504 MT).

General and Administrative Expenses

General and administrative expenses in 4Q12 were US$21.6 million, 32% higher than the figure reported in 4Q11 (US$16.3 million). This figure included US$6.0 million in metallurgical research studies. For 2012, general and administrative expenses were US$99.3 million versus US$75.2 million in 2012 (an increase of 32%).

Operating Income

Operating income in 4Q12 was US$86.7 million, a 47% decrease compared to the US$164.0 million reported in 4Q11. This decrease was mainly due to a 53% increase in operating costs and exploration expenses, while revenues increased 5%. It is important to mention that during 4Q12, El Brocal purchased US$18.0 million in copper concentrates to blend with Marcapunta copper concentrates, which negatively impacted operational costs and margins.

For 2012, operating income was US$418.2 million versus US$704.4 million in 2012 (a decrease of 41%).

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 4 of 16

Share in Associated Companies

During 4Q12, Buenaventura’s share in associated companies was US$89.9 million, 28% lower than the US$124.5 million reported in 4Q11. Yanacocha’s contribution to these results decreased 63%, from US$86.8 million in 4Q11 to US$32.4 million in 4Q12, while Cerro Verde’s contribution decreased 28% from US$40.0 million in 4Q11 to US$28.6 million in 4Q12. Coimolache (Tantahuatay mine) results partially offset this decrease with a 44% higher contribution (US$8.8 million in 4Q12 vs. US$6.1 million in 4Q11).

For 2012, Buenaventura’s share in associated companies was US$464.2 million, in-line with the figure reported in 2012.

YANACOCHA

At Yanacocha (43.65% owned by Buenaventura), 4Q12 gold production was 235,875 ounces of gold, 30% lower than 4Q11 production (334,833 oz.). Accumulated gold production in 2012 was 1,345,992 ounces, 4% higher than 2012 (1,293,123 oz.).

Costs applicable to sales (CAS) at Yanacocha in 4Q12 were US$635/oz., 19% higher than the figure reported in 4Q11 (US$533/oz.) due to lower production. Net income at Yanacocha in 4Q12 was US$75.7 million, 62% lower compared to 4Q11 (US$199.2 million). Accumulated net income in 2012 was US$626.5 million, 2% lower than 2011 (US$642.4 million).

During 4Q12, EBITDA totaled US$186.0 million, a 49% decrease compared to 4Q11 (US$362.0 million). This decrease was mainly due to a 29% decrease in sales. Accumulated EBITDA in 2012 was US$1,241.8 million, 6% higher than 2012 (US$1,167.4 million).

Capital expenditures at Yanacocha were US$172.5 million in 4Q12 and US$995.0 in 2012.

CERRO VERDE

At Cerro Verde (19.58% owned by Buenaventura), 4Q12 copper production was 68,874 MT, a 4% increase compared to 4Q11 (65,958 MT). Accumulated total copper production in 2012 was 269,649 MT, 8% lower than 293,581 MT in 2012.

During 4Q12, Cerro Verde reported net income of US$146.2 million, a 28% decrease compared to US$202.6 million in 4Q11. This was mainly due to an 11% decrease in sales revenues (US$501.0 million in 4Q12 versus US$565.0 million in 4Q11). Accumulated net income in 2012 was US$772.1 million, 28% lower than US$1,078.4 million in 2012.

Capital expenditures at Cerro Verde in 4Q12 totaled US$200.0 million and US$600.8 in 2012.

COIMOLACHE (Tantahuatay operation)

At Coimolache (40.04% owned by Buenaventura), attributable contribution was US$8.8 million (US$6.1 million in 4Q11). For 2012, attributable contribution was US$40.2 million (US$9.6 million in 2012).

CANTERAS DEL HALLAZGO (Chucapaca project)

At the Chucapaca Project (49% owned by Buenaventura), a value-engineering phase was initiated to improve the project’s economic returns of after the completion of a Feasibility Study. Additional studies will be directed towards evaluating potential options, including underground and combined open-pit and underground mining scenarios, a review of capital costs and capital efficiencies, along with re-commencement of an exploration phase at the Chucapaca Area of Interest (AOI).

In 2012, Buenaventura’s total disbursement at the Chucapaca project was US$32.4 million.

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 5 of 16

Net Income

Buenaventura’s 4Q12 net income was US$139.1 million (US$0.54 per share), a 39% decrease compared to the US$227.9 million (US$0.90 per share) reported in 4Q11. Accumulated net income in 2012 was US$684.7 million (US$2.69 per share), 20% lower compared to 2012 (US$858.9 million).

Project Development

LA ZANJA DEVELOPMENT PROGRAM

· The Pampa Verde Project will allow the development of a new open pit, an expansion of the current leach pad and improvements to the operation’s road access. Construction began in 2Q11. The project’s total investment is US$74.2 million. Completion is expected in 3Q13.

· Engineering for slope stability was developed during 4Q12.

RIO SECO MANGANESE SULFATE PLANT

· Buenaventura continued with the construction of the manganese sulfate plant. The project’s total budget is US$ 90.0 million.

· The project includes an acid leaching facility, a sulfuric acid production plant and a manganese sulfate crystallization plant.

· The Company has started the commissioning process for the project’s main equipment.

HUANZA HYDROELECTRICAL PLANT

· Construction progress at the Huanza Project included:

1. Water Conduction Tunnel: 10,074 meters of excavation is 100% complete

2. Power plant: civil work is 100% complete

3. Pallca Dam: 100% complete

4. Construction of electromechanical equipment is nearly complete

5. Commissioning of the Pallca Dam began February 26, 2013 and will continue on different sections on a progressive basis

Other Information

At the Board of Directors meeting held February 28, 2013, the following resolutions were passed:

To call for the Annual Shareholders Meeting to be held March 26, 2013 to:

• Approve the financial statements as of December 31, 2012

• Approve the 2012 Annual Report

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

• Approve a simplification of corporate structure by absorbing wholly-owned subsidiaries CEDIMIN SAC and Inversiones Colquijirca S.A.

* * *

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 6 of 16

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*, Breapampa*, Mallay*, Antapite*, Julcani*, Recuperada*, El Brocal, La Zanja, Coimolache and CEDIMIN*).

The Company owns 43.65% of Minera Yanacocha S.R.L (a partnership with Newmont Mining Corporation), an important precious metal producer; 19.58% of Sociedad Minera Cerro Verde, an important Peruvian copper producer, and 49% of Canteras del Hallazgo S.A, owner the Chucapaca project.

For a printed version of the Company’s 2011 Form 20-F, please contact the persons indicated above, or download a PDF format file from the Company’s web site.

(*) Operations wholly owned by Buenaventura

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’s 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’s, Yanacocha’s and Cerro Verde’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.

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 7 of 16

**Tables to follow**

APPENDIX 1

	BVN		Operating
	Equity %		Mines / Business
Cedimin S.A.C*		100.00		Shila / Paula
Consorcio Energetico de Huancavelica S.A*		100.00		Energy – Huanza Hydroelectrical Project
Buenaventura Ingenieros S.A*		100.00		Engineering Consultant
Minera La Zanja S.A*		53.06		La Zanja
Sociedad Minera El Brocal S.A.A*		53.76		Colquijirca and Marcapunta
Canteras del Hallazgo S.A **		49.00		Chucapaca Project
Compañía Minera Coimolache S.A **		40.04		Tantahuatay
Minera Yanacocha S.R.L **		43.65		Yanacocha
Sociedad Minera Cerro Verde S.A.A **		19.58		Cerro Verde

(*)Consolidates

(**) Equity Accounting

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 8 of 16

APPENDIX 2

	GOLD PRODUCTION
	Three Months Ended December 31																Full Year
	Orcopampa									Orcopampa Old Tailings							Orcopampa									Orcopampa Old Tailings
	2012			2011			%			2012		2011		%			2012			2011			%			2012			2011			%
Ore Milled DST		122,177			130,685			-7	%									508,646			499,728			2	%
Ore Grade OZ/ST		0.48			0.53			-11	%									0.49			0.55			-11	%
Recovery Rate %		95.6	%		94.3	%		1	%									95.9	%		94.7	%		1	%
Ounces Produced		55,652			65,788			-15	%		4,128		5,508		-25	%		240,134			260,958			-8	%		20,245			24,243			-16	%
Orcopampa Total Production					4Q12			59,780			4Q11		71,296		FY2012			260,379			FY2011			285,201
		LA ZANJA																Tantahuatay
		4Q12			4Q11			%			FY2012		FY2011		%			4Q12			4Q11			%			FY2012			FY2011			%
Ounces Produced		28,670			32,857			-13	%		112,387		134,190		-16	%		35,340			29,895			18	%		141,268			46,164			206	%
		SILVER PRODUCTION
		Three Months Ended December 31																Full Year
		Uchucchacua									Colquijirca							Uchucchacua									Colquijirca
		2012			2011			%			2012		2011		%			2012			2011			%			2012			2011			%
Ore Milled DST		292,481			294,754			-1	%									1,156,655			1,086,123			6	%		2,177,003			929,032			134	%
Ore Grade OZ/ST		12.70			13.07			-3	%									13.00			13.00			0	%		2.16			2.67			-19	%
Recovery Rate %		81.1	%		71.6	%		13	%									74.9	%		71.2	%		5	%		56.5	%		76.1	%		-26	%
Ounces Produced		3,012,187			2,788,798			8	%									11,263,322			10,090,936			12	%		2,655,961			1,876,503			42	%
		ZINC PRODUCTION
		Three Months Ended December 31																Full Year
		Uchucchacua									Colquijirca							Uchucchacua									Colquijirca
		2012			2011			%			2012		2011		%			2012			2011			%			2012			2011			%
Ore Milled DST		292,481			294,754			-1	%									1,156,655			1,086,123			6	%		2,177,003			929,032			134	%
Ore Grade %		1.63			1.46			12	%									1.51			1.31			15	%		2.73			3.89			-30	%
Recovery Rate %		67.8	%		52.3	%		30	%									62.0	%		51.7	%		20	%		64.8	%		71.9	%		-10	%
ST Produced		3,231			2,257			43	%									10,825			7,350			47	%		38,525			25,968			48	%

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 9 of 16

APPENDIX 3: EBITDA RECONCILIATION (in thousand US$)

	4Q12	4Q11	FY 2012	FY 2011
Net Income	148,451	251,591	742,790	960,478
Add / Substract:	-18,262	-59,502	-172,892	-125,113
Provision for income tax, net	28,252	35,467	142,594	211,589
Share in associated companies by the equity method, net	-89,935	-124,510	-464,239	-468,363
Interest income	-1,725	-4,575	-9,486	-11,827
Interest expense	3,608	6,740	8,290	11,823
Loss on currency exchange difference	-1,969	-677	-1,715	675
Long Term Compensation provision	-5,592	-5,982	1,720	-5,982
Depreciation and Amortization	38,803	27,206	123,043	96,381
Workers´ participation provision	6,679	6,829	23,284	40,591
Impairment of Long-Lived Assets	3,617	0	3,617	0
EBITDA Buenaventura Direct Operations	130,189	192,089	569,898	835,365
EBITDA Yanacocha (43.65%)	81,185	158,028	542,067	509,554
EBITDA Cerro Verde (19.58%)	53,276	59,018	256,050	316,756
EBITDA Coimolache (40%)	16,836	12,606	70,793	19,618
EBITDA Buenaventura + All Associates	281,486	421,741	1,438,808	1,681,293

Note:

EBITDA (Buenaventura Direct Operations) consists of earnings before net interest, taxes, depreciation and amortization, share in associated companies, net, loss on currency exchange difference, other, net, provision for workers’ profit sharing and provision for long-term officers’ compensation.

EBITDA (including Affiliates) consists of EBITDA (Buenaventura Direct Operations), plus (1) Buenaventura’s equity share of EBITDA (Yanacocha) (2) Buenaventura’s equity share of EBITDA (Cerro Verde), plus (3) Buenaventura’s equity share of EBITDA (Coimolache). All EBITDA mentioned were similarly calculated using financial information provided to Buenaventura by the affiliated companies.

Buenaventura presents EBITDA (Buenaventura Direct Operations) and EBITDA (including affiliates) to provide further information with respect to its operating performance and the operating performance of its equity investees, the affiliates. EBITDA (Buenaventura Direct Operations) and EBITDA (including affiliates) are not a measure of financial performance under IFRS, and may not be comparable to similarly titled measures of other companies. You should not consider EBITDA (Buenaventura Direct Operations) and EBITDA (including affiliates) as alternatives to operating income or net income determined in accordance with IFRS, as an indicator of Buenaventura’s, affiliates operating performance, or as an alternative to cash flows from operating activities, determined in accordance with IFRS, as an indicator of cash flows or as a measure of liquidity.

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 10 of 16

APPENDIX 4: PROVEN AND PROBABLE RESOURCES

GOLD
	% Ownership		DST (000)		Grade (Oz/TCS)		Oz (000)		Attributable
Orcopampa		100.00		1,091		0.421		459		459
Julcani		100.00		425		0.017		7		7
Shila - Paula		100.00		8		0.397		3		3
Antapite		100.00		48		0.300		14		14
Ishihuinca		100.00		13		0.334		4		4
Poracota		100.00		36		0.332		12		12
Yanacocha		43.65		220,778		0.027		5,907		2,578
Yanacocha (Conga)		43.65		590,855		0.021		12,582		5,492
El Brocal Marcapunta (Sulphides)		53.76		20,016		0.010		204		110
La Zanja		53.06		24,795		0.018		437		232
La Zanja (on Pads)		53.06						40		21
Tantahuatay (Oxides)		40.00		24,428		0.019		464		185
Tantahuatay (Oxides on Leach Pad)		40.00		14,845		0.004		64		26
Breapampa		100.00		5,133		0.038		197		197
Mallay		100.00		288		0.026		8		8
Total				902,759		0.023		20,402		9,348
SILVER
		% Ownership		DST (000)		Grade (Oz/TCS)		Oz (000)		Attributable
Orcopampa		100.00		1,091		0.54		589		589
Poracota		100.00		36		0.08		3		3
Uchucchacua (Silver - Sulphides)		100.00		4,661		13.45		62,682		62,682
Uchucchacua (Zinc -Sulphides)		100.00		670		5.09		3,409		3,409
Uchucchacua (Silver - Oxides)		100.00		355		16.93		6,008		6,008
Julcani		100.00		425		18.56		7,879		7,879
Recuperada		100.00		114		8.80		1,007		1,007
Antapite		100.00		48		0.22		11		11
Shila - Paula		100.00		8		0.92		8		8
El Brocal (Tajo Norte - La Llave)		53.76		63,333		0.76		48,262		25,946
El Brocal Marcapunta (Sulphides)		53.76		20,016		0.47		9,442		5,076
Breapampa		100.00		5,133		0.73		3,750		3,750
La Zanja		53.06		24,795		0.21		5,156		2,736
La Zanja (on Pads)		53.06						3,267		1,734
Tantahuatay (Oxides)		40.00		24,428		0.24		5,762		2,305
Tantahuatay (Oxides on Leach Pad)		40.00		14,845		0.44		6,517		2,607
Yanacocha (Conga)		43.65		590,855		0.06		37,784		16,493
Mallay		100.00		288		10.87		3,133		3,133
Total				751,101		0.27		204,669		145,376

Prices used for Reserve calculation: Gold US$1,400 /Oz - Silver US$30 /Oz

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 11 of 16

CONTINUE APPENDIX 4: PROVEN AND PROBABLE RESERVES

ZINC
	% Ownership		DST (000)		Grade %		ST (000)		Attributable
Mallay		100.00		288		7.09		20		20
Uchucchacua (Silver - Sulphides)		100.00		4,661		1.35		63		63
Uchucchacua (Zinc - Sulphides)		100.00		670		5.57		37		37
Recuperada		100.00		114		7.05		8		8
El Brocal (Tajo Norte - La Llave)		53.76		63,333		2.40		1,520		817
Total				69,066		2.39		1,648		945
LEAD
		% Ownership		DST (000)		Grade %		ST (000)		Attributable
Julcani		100.00		425		1.88		8		8
Uchucchacua (Silver - Sulphides)		100.00		4,661		0.97		45		45
Uchucchacua (Zinc -Sulphides)		100.00		670		3.87		26		26
Mallay		100.00		288		6.24		18		18
Recuperada		100.00		114		4.04		5		5
El Brocal (Tajo Norte - La Llave)		53.76		63,333		0.80		507		272
Total				69,491		0.88		609		374
COPPER
		% Ownership		DST (000)		Grade %		ST (000)		Attributable
Julcani		100.00		425		0.50		2		2
Cerro Verde (Sulphides)		19.58		4,194,537		0.37		15,520		3,039
Cerro Verde (Oxides)		19.58		530,850		0.50		2,654		520
Yanacocha (Conga)		43.65		590,855		0.28		1,648		719
El Brocal Marcapunta (Sulphides)		53.76		20,016		1.99		398		214
Total				5,336,683		0.38		20,222		4,493
MOLYBDENUM
		% Ownership		DST (000)		Grade %		ST (000)		Attributable
Cerro Verde (Sulphides)		19.58		4,194,537		0.01		587		115
Total				4,194,537		0.01		587		115

Prices used for Reserve calculation: Zinc US$2,028 /MT- Lead US$2,000 /MT Copper - US$6,600 /MT

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 12 of 16

APPENDIX 5

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

Consolidated Statement of Financial Position    

As of December 31, 2012 and 2011

	2012		2011
Assets	US$(000)		US$(000)
Current assets
Cash and cash equivalents		186,712		480,968
Financial assets at fair value through profit or loss		54,509		52,178
Trade accounts receivable, net		256,431		172,569
Other accounts receivable		108,568		48,521
Accounts receivable from associates		22,534		47,425
Derivative financial instruments		-		1,283
Inventory, net		163,067		149,108
Prepaid expenses		11,837		16,234
Total current assets		803,658		968,286
Other accounts receivable		6,702		5,570
Other accounts receivable from associates		33,377		32,262
Long-term inventory		55,937		48,845
Investment in associates		2,436,237		1,935,004
Mining concessions, development cost and property, plant and equipment, net		1,134,276		830,997
Deferred income tax asset, net		113,343		125,538
Other assets		5,123		7,047
Total assets		4,588,653		3,953,549
Liabilities and shareholders’ equity, net
Current liabilities
Trade accounts payable		199,551		142,375
Income tax payable		7,935		36,423
Other accounts payable		59,096		41,150
Provisions		71,780		91,287
Other accounts payable to associates		890		883
Embedded derivatives for concentrates sales, net		4,939		7,306
Financial obligations		5,815		1,042
Total current liabilities		350,006		320,466
Other non-current provisions		100,041		86,528
Other accounts payable to associates		731		1,004
Financial obligations		173,489		105,072
Total liabilities		624,267		513,070
Shareholders’ equity net
Capital stock, net of treasury shares of US$(000) 62,622		750,540		750,540
Investments shares, net of treasury shares of (000) US$762		1,399		2,019
Additional paid-in capital		219,471		225,978
Legal reserve		162,663		162,639
Other reserves		269		269
Retained earnings		2,566,787		2,034,768
Cumulative unrealized, gain (loss)		925		2,068
		3,702,054		3,178,281
Non-controlling interest		262,332		262,198
Total shareholders’ equity, net		3,964,386		3,440,479
Total liabilities and shareholders’ equity, net		4,588,653		3,953,549

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 13 of 16

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

Consolidated Income Statements          

For the three and twelve month periods ended December 31, 2012 and 2011

	For the three month period ended December, 31						For the twelve month period ended December, 31
	2012			2011			2012			2011
	US$(000)			US$(000)			US$(000)			US$(000)
Operating income
Net sales		411,613			384,970			1,496,349			1,493,882
Royalty income		12,557			17,367			67,178			62,742
Total income		424,170			402,337			1,563,527			1,556,624
Operating costs
Cost of sales, without considering depreciation and amortization		(194,531	)		(123,944	)		(629,492	)		(446,163	)
Exploration in units in operation		(55,865	)		(33,984	)		(153,018	)		(109,355	)
Depreciation and amortization		(38,803	)		(27,206	)		(123,043	)		(96,381	)
Royalties		(7,547	)		(8,323	)		(37,667	)		(60,262	)
Total operating costs		(296,746	)		(193,457	)		(943,220	)		(712,161	)
Gross income		127,424			208,880			620,307			844,463
Operating expenses
Administrative		(21,643	)		(16,345	)		(99,295	)		(75,170	)
Exploring in non-operating areas		(22,262	)		(14,066	)		(95,491	)		(49,593	)
Selling		(5,809	)		(3,479	)		(18,090	)		(11,617	)
Impairment of long-lived assets		(3,617	)		-			(3,617	)		-
Excess of workers’ profit sharing		(2,164	)		(6,221	)		(2,164	)		(6,221	)
Other operating income (expense), net		14,753			(4,733	)		16,584			2,513
Total operating expenses		(40,742	)		(44,844	)		(202,073	)		(140,088	)
Operating income		86,682			164,036			418,234			704,375
Other income (expenses), net
Share in the results of associates		89,935			124,510			464,239			468,363
Interest income		1,725			4,575			9,486			11,827
Interest expense		(3,608	)		(6,740	)		(8,290	)		(11,823	)
Gain (loss) from currency exchange difference, net		1,969			677			1,715			(675	)
Total other income, net		90,021			123,022			467,150			467,692
Income before income tax and non-controlling interest		176,703			287,058			885,384			1,172,067
Income tax		(28,252	)		(35,467	)		(142,594	)		(211,589	)
Net income		148,451			251,591			742,790			960,478
Attributable to:
Non-controlling interest		9,384			23,661			58,105			101,551
Owners of the parent		139,067			227,930			684,685			858,927
		148,451			251,591			742,790			960,478
Basic and diluted earnings per share attributable to Buenaventura, stated in U.S. dollars		0.54			0.90			2.69			3.38
Weigthed average number of shares outstanding (common and investment), in units		254,232,571			254,442,328			254,232,571			254,442,328

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 14 of 16

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

Consolidated Statements of cash flows          

For the three and twelve month periods ended December 31, 2012 and 2011

	For the three month period ended December, 31						For the twelve month period ended December, 31
	2012			2011			2012			2011
	US$(000)			US$(000)			US$(000)			US$(000)
Operating activities
Proceeds from sales		352,963			417,535			1,410,120			1,505,476
Royalties received		21,035			18,671			76,106			56,153
Value Added Tax (VAT) recovered		10,779			3,225			40,940			22,585
Dividends received		5,613			-			16,467			-
Interest received		1,700			2,525			8,606			8,528
Payments to suppliers and third parties		(230,558	)		(139,264	)		(838,250	)		(672,479	)
Payments to employees		(45,973	)		(58,381	)		(201,494	)		(164,677	)
Income tax paid		(29,279	)		(25,371	)		(136,336	)		(111,802	)
Payment of royalties		(9,187	)		(18,138	)		(38,985	)		(73,776	)
Payments of interest		(206	)		(1,632	)		(1,485	)		(2,543	)
Net cash and cash equivalents provided by operating activities		76,887			199,170			335,689			567,465
Investment activities
Decrease (increase) in time deposits		539			(8,679	)		10,121			7,814
Proceeds from sale of mining concessions, development cost, property, plant and equipment		136			99			255			7,891
Proceeds from sales of investments shares		3,658			-			3,658			-
Additions of mining concessions, development cost, property, plant and equipment		(134,007	)		(139,320	)		(442,927	)		(317,816	)
Payments for purchase of investments shares and contibution to associates		(4,449	)		204,943			(58,594	)		(52,182	)
Net cash and cash equivalents provided by (used in) invesment activities		(134,123	)		57,043			(487,487	)		(354,293	)
Financing activities
Increase in financial obligations		19,945			16,525			74,258			50,962
Dividen paid		(50,887	)		(58,521	)		(152,666	)		(142,488	)
Dividen paid to non-controlling interest		(5,764	)		(18,318	)		(44,881	)		(66,736	)
Capital stock reduction paid to non-controlling interest		-			-			(7,980	)		-
Proceeds from sales of investments shares		-			-			-			60,379
Payments for purchase of investments shares to non-controlling interest		-			(225,303	)		-			(225,303	)
Payments of financial obligation		(48	)		(500	)		(1,068	)		(2,000	)
Net cash and cash equivalents used in financing activities		(36,754	)		(286,117	)		(132,337	)		(325,186	)
Decrease in cash and cash equivalents for the period, net		(93,990	)		(29,904	)		(284,135	)		(112,014	)
Cash and cash equivalents at beginning of period		280,702			500,751			470,847			582,861
Cash and cash equivalents at period-end		186,712			470,847			186,712			470,847

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 15 of 16

	For the three month period ended December, 31						For the twelve month period ended December, 31
	2012			2011			2012			2011
	US$(000)			US$(000)			US$(000)			US$(000)
Reconciliation of net income to cash and cash equivalents provided by operating activities
Net income attributable to owners of the parent		139,067			227,930			684,685			858,927
Add (less)
Depreciation and amortization		63,209			49,147			147,449			118,322
Net income attributable to non-controlling interest		9,384			23,661			58,105			101,551
Deferred income tax		(6,366	)		(5,696	)		10,809			42,369
Accretion expense of the provision for closure of mining units and units in exploration		3,407			4,931			6,812			9,100
Net cost of plant and equipment retired and sold		4,120			1,858			4,120			1,858
Impairment of long-lived assets		3,617			-			3,617			-
Loss (gain) from currency exchange differences		(1,969	)		(677	)		(1,715	)		675
Share in the results of associates, net of dividends received in cash		(84,322	)		(124,510	)		(447,772	)		(468,363	)
Provisions		131,389			9,199			(6,200	)		(12,274	)
Provision for estimated fair value of embedded derivatives related of concentrates sales and adjustments on open liquidations		15,484			(10,721	)		(16,592	)		33,889
Net changes in operating assets and liabilities accounts
Decrease (increase) in operating assets
Trade accounts receivable, net		(69,302	)		44,271			(83,862	)		(11,641	)
Other accounts receivable		(36,743	)		(29,290	)		(60,047	)		2,552
Other accounts receivable from associates		16,551			(6,771	)		23,776			(40,048	)
Inventory, net		(4,114	)		(8,818	)		(21,051	)		(88,461	)
Prepaid expenses		22,350			(27,364	)		(4,397	)		(13,244	)
Increase (decrease) of operating liabilities
Trade accounts payable		25,752			40,727			57,176			51,001
Other accounts payable		(154,169	)		19,715			9,264			(28,046	)
Income tax payable		(458	)		(8,422	)		(28,488	)		9,298
Net cash and cash equivalents provided by operating activities		76,887			199,170			335,689			567,465

Buenaventura
Fourth Quarter and Full Year-2012 Results
Page 16 of 16

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 28, 2013