Buenaventura Announces First Quarter 2015 Results

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 first quarter (1Q15). All figures have been prepared in accordance with IFRS (International Financial Reporting Standards) on a non GAAP basis and are stated in U.S. dollars (US$).

First Quarter 2015 Highlights:

• In 1Q15, EBITDA from direct operations was US$49.3 million and adjusted EBITDA (including associated companies) was US$142.9 million.
• Total attributable production in 1Q15 was 194k gold ounces and 5.6 million silver ounces (compared to 190k gold ounces and 4.1 million silver ounces in 1Q14).
• Yanacocha ´s CAS in 1Q15 was US$479/oz, a decrease of 56% when compared to US$1,087/oz in 1Q14 due to lower ore treated, higher grade and lower stripping ratio.
• At the Tambomayo project, construction permits are expected to be ready in 2Q15. Production should begin in 2Q16 at 1,000 TPD (110-120K gold ounces and 3.0 million silver ounces per year).
• At the San Gabriel (Chucapaca) project, construction of the ramp is expected to start in May 2015. The Environmental Impact Assessment (EIA) of the project ´s construction is expected to be submitted in 3Q15.
• At El Brocal, testing of the plant expansion was completed and production ramp up reached 16.5k TPD level. Full production capacity level (18K TPD) will be reached in 2Q15.
• Cerro Verde ™s plant expansion to 360K TPD is in-line with schedule and budget (approx. 70% complete). Additional production from the expanded plant is scheduled for early 2016. Will become the largest concentration facility in the world.

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

Operating Revenues

During 1Q15, net sales were US$242.9 million, a 11% decrease compared to the US$272.9 million reported in 1Q14. This was explained by the lower gold, silver and copper prices despite higher silver and zinc volume sold.

Royalty income increased 13%, to US$9.1 million in 1Q15 compared to the US$8.0 million reported in 1Q14. This was due to higher revenues at Yanacocha (15% higher QoQ).

Production and Operating Costs

In 1Q15, Buenaventura ™s gold equity production from direct operations decreased 14%, from 99.5k ounces in 1Q14 to 85.3k ounces in 1Q15 because Breapampa stopped mining last November 2014 according to the mining plan. Gold production including associated companies increased 2% due to higher production in Yanacocha. Silver equity production from direct operations increased 38%, mainly due to higher production in Uchucchacua and El Brocal.

Orcopampa ™s (100% owned by Buenaventura)

Gold production at Orcopampa increased 11% in 1Q15 (compared to 1Q14) due to higher ore treated and grade (Appendix 2). Cost Applicable to Sales (CAS) in 1Q15 decreased 16% mainly explained by lower reagent (cyanide) costs, fuel consumption and contractors costs.

Gold production guidance for 2015 is 190k “ 205k ounces.

Uchucchacua (100% owned by Buenaventura)

Silver production in 1Q15 increased 49% compared to 1Q14, explained by higher ore volume treated and recovery rate (see Appendix 2). Cost Applicable to Sales (CAS) in 1Q15 decreased 15% compared to 1Q14 mainly explained by a reduction in list prices of our underground mining contractors and an overall reduction in hauling distances.

Silver production guidance for 2015 is 14.5 million - 15.0 million ounces.

Mallay (100% owned by Buenaventura)

Silver production in 1Q15 was 3% higher than in 1Q14 due to higher recovery rate. Cost Applicable to Sales (CAS) in 1Q15 was 6% higher compared to 1Q14 due to an increase in mine site exploration expenses.

Silver production guidance for 2015 is 1.1 million “ 1.3 million ounces.

Julcani (100% owned by Buenaventura)

Silver production in 1Q15 was 7% higher than in 1Q14 explained by higher ore treated and recovery rate. Cost Applicable to Sales (CAS) in 1Q15 was 6% higher than 1Q14 mainly explained by an increase in contractors and supply expenses due to more drilling and drifting activities.

Silver production guidance for 2015 is 2.9 million “ 3.1 million ounces.

La Zanja ™s (53.06% owned by Buenaventura)

Gold production in 1Q15 decreased 15% when compared to 1Q14 due to a higher stripping ratio. CAS in 1Q15 increased 49% mainly explained by higher contractor expenses associated with the hauling distance from Pampa Verde, as well as additional acid water treatment costs.

Gold production guidance for 2015 is 138k “ 142k ounces.

Tantahuatay ™s (40.10% owned by Buenaventura)

Gold production in 1Q15 decreased 7% compared to the figure reported in 1Q14. CAS in 1Q15 increased 21% due to higher stripping ratio and lower ore grade in the current area of operation.

Gold production guidance for 2015 is 138k “ 142k ounces

El Brocal (54.07% owned by Buenaventura)

During 1Q15, El Brocal produced 3,869 MT of copper, 14,020 MT of zinc and 982,254 ounces of silver (97% increase when compared to 497,657 ounces in 1Q14). Copper CAS was 7% higher compared to 1Q14 due to an increase in commercial deductions. Zinc CAS was 1,506 US$/MT.

Zinc production guidance for 2015 is 75k “ 85k MT. Copper production guidance for 2015 is 30k “ 35k MT.

General and Administrative Expenses

General and administrative expenses in 1Q15 were US$21.5 million, 22% lower when compared to the 1Q14 figure (US$27.7 million) due to a lower long-term compensation provision (US$ 1.9M in 1Q14 vs US$0.1 in 1Q15) and a 46% decrease in services provided by third parties.

Exploration in Non-Operating Areas

Exploration in non-operating areas during 1Q15 was US$10.7 million in-line with US$10.4 million for 1Q14. During the period, Buenaventura ™s main exploration efforts were focused on the following projects: La Zanja Underground (US$5.1 million) and Tambomayo (US$3.4 million).

Share in Associated Companies

During 1Q15, Buenaventura ™s share in associated companies was US$36.3 million, compared to the negative US$4.5 million reported in 1Q14, composed by:

YANACOCHA

At Yanacocha (43.65% owned by Buenaventura), during 1Q15, gold production was 248,055 ounces, 20% higher than 1Q14 production (207,511 ounces). 2015 Gold production guidance for Yanacocha is 880k “ 940k ounces.

Under IFRS, Yanacocha reported US$60.1 million of net income (US$2.5 million under US GAAP).

In 1Q15, CAS was US$479/oz, a decrease of 56% when compared to US$1,087/oz in 1Q14 due to lower stripping ratio in accordance with the mining plan.

Capital expenditures at Yanacocha were US$15.2 million in 1Q15.

CERRO VERDE

At Cerro Verde (19.58% owned by Buenaventura), during 1Q15 copper production was 48,623 MT (9,520 MT attributable to Buenaventura), a 20% decrease compared to 1Q14 (60,955 MT and 11,935 MT attributable to Buenaventura) due to a lower ore grade and recovery in copper concentrates.

During 1Q15, Cerro Verde reported net income of US$40.7 million, 59% lower compared to US$98.0 million in 1Q14. The decrease is primarily as result of a decrease in net sales of US$89.7 million which is attributable to a 10% decrease in average realized copper price (US$ 2.49 in 1Q15 vs US$2.76 in 1Q14) and lower copper sales volumes.

Capital expenditures at Cerro Verde were US$468.9 million in 1Q15 and US$439.4 million in 2014.

Cerro Verde ™s plant expansion has an excess of 70% progress and completion expected by 4Q15. The total CAPEX for the project is US$4.6 billion.

COIMOLACHE (Tantahuatay operation)

At Coimolache (40.10% owned by Buenaventura), attributable contribution to the net income in 1Q15 was US$2.1 million (US$4.8 million in 1Q14).

Project Development and Exploration

The Tambomayo Project (100% ownership)

The Tambomayo ´s Environmental Impact Assessment (EIA) was approved in January 2015. Construction permits are expected to be ready in 2Q15 and 80% of the purchase orders have been placed. Tambomayo has 250k gold ounces in reserves and 335k gold ounces in resources. Additionally, Tambomayo has 9.4 million silver ounces in reserves and 5.9 million silver ounces in resources. The estimated annual production is 110k-120k gold ounces and 3.0 million silver ounces.

The San Gabriel Project (100% ownership)

Diamond drilling at the Pachacutec prospect and the beginning of construction of the San Gabriel ramp is expected to begin in May 2015. The Environmental Impact Assessment (EIA) of the project ´s construction is expected to be submitted to the authorities in 3Q15. San Gabriel has 2.5 million ounces of gold in resources. The estimated annual production is 180k-220k gold ounces.

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*, Uchucchacua*, Breapampa*, Mallay*, Julcani*, El Brocal, La Zanja and Coimolache and is developing the Tambomayo and San Gabriel projects.

The Company owns 43.65% of Minera Yanacocha S.R.L (a partnership with Newmont Mining Corp.), an important precious metal producer; 19.58% of Sociedad Minera Cerro Verde, an important Peruvian copper producer.

For a printed version of the Company ™s 2013 Form 20-F, please contact the investor relations contacts on page 1 of this report, or download the PDF format file from the Company ™s web site at www.buenaventura.com.

(*) 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, economic, 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.

**Tables to follow**

APPENDIX 1

APPENDIX 2

APPENDIX 3: EBITDA Reconciliation (in thousand US$)

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 associated companies) 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 associated 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.

APPENDIX 4: COST APPLICABLE TO SALES RECONCILIATION

Reconciliation of Costs Applicable to Sales and Cost Applicable to Sales per Unit Sold

Cost applicable to sales consists of cost of sales, excluding depreciation and amortization, plus Selling expenses. Cost applicable to sales per unit sold for each mine consists of cost applicable to sales for a particular metal produced at a given mine divided by the volume of such metal produced at such mine in the specified period. We note that cost applicable to sales is not directly comparable to the cash operating cost figures disclosed in previously furnished earnings releases.

Cost applicable to sales and Cost applicable to sales per unit of mineral sold are not measures of financial performance under IFRS, and may not be comparable to similarly titled measures of other companies. We consider Cost applicable to sales and Cost applicable to sales per unit of mineral sold to be key measures in managing and evaluating our operating performance. These measures are widely reported in the precious metals industry as a benchmark for performance, but do not have standardized meanings. You should not consider Cost applicable to sales or Cost applicable to sales per unit of mineral sold as alternatives to cost of sales determined in accordance with IFRS, as indicators of our operating performance. Cost applicable to sales and Cost applicable to sales per unit of mineral sold are calculated without adjusting for by-product revenue amounts.

The tables below set forth (i) a reconciliation of consolidated Cost of sales, excluding depreciation and amortization to consolidated Cost applicable to sales, (ii) reconciliations of the components of Cost applicable to sales (by mine and mineral) to the corresponding consolidated line items set forth on our consolidated statements of profit or loss for the three and six months ended June 30, 2013 and 2014, and (iii) reconciliations of Cost of sales, excluding depreciation and amortization to Cost applicable to sales for each of our mining units. The amounts set forth in Cost applicable to sales and Cost applicable to sales per unit sold for each mine and mineral indicated in the tables below can be reconciled to the amounts set forth on our consolidated statements of profit or loss for the three and six months ended June 30, 2013 and 2014 by reference to the reconciliations of Cost of sales, excluding depreciation and amortization (by mine and mineral), Selling Expenses (by mine and metal) expenses and Exploration in units in operations (by mine and mineral) to consolidated Cost of sales, excluding depreciation and amortization, consolidated Selling Expenses and consolidated Exploration in units in operations expenses, respectively, set forth below.

APPENDIX 5: ALL-IN SUSTAINING COST FOR 1Q15

APPENDIX 6: