Accumulated net sales in the first six-month period 2012 were US$690.7 million, in-line with the figure reported in the same period in 2011 (US$690.8 million), while royalty income was US$36.8 million, a 30% increase when compared to the US$28.2 million reported in 2011.

Production and Operating Costs

Buenaventura’s equity production 1 in 2Q12 was 107,168 ounces of gold, 11% lower than the 120,641 ounces reported in 2Q11 mainly due to a decrease in Orcopampa and Poracota production. Silver production in 2Q12 was 4.5 million ounces, a 32% increase when compared to the figure reported in 2Q11 (3.4 million oz).

Equity production 1 in the first six-month period 2012 was 225,022 ounces of gold and 8.5 million ounces of silver. This represented a 5% decrease in gold production (237,259 ounces in 2011), and 13% higher silver production compared to 2011 (7.5 million ounces).
 
Equity Production 1
      2Q12     2Q11     Var%     6M12     6M11     Var%
Gold (oz)     107,168     120,641     -11%     225,022     237,259     -5%
Gold (oz) inc. Yanacocha     277,394     269,778     3%     555,191     512,202     8%
Silver (oz)     4,509,259     3,404,689     32%     8,523,034     7,549,314     13%
Lead ( MT)     6,910     4,617     50%     11,625     7,757     50%
Zinc ( MT)     11,842     6,164     92%     19,245     8,772     119%
Copper (MT) inc. Cerro Verde     13,629     17,134     -20%     29,044     35,985     -19%

1 Production 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.

Orcopampa’s (100% owned by Buenaventura) production from the Chipmo mine in 2Q12 was 56,762 ounces, 18% lower than the 69,335 ounces reported in 2Q11 due to a 15-day strike and 15% lower ore grade (See Appendix 2). The old tailings treatment produced 3,984 gold ounces (compared to 5,876 ounces in 2Q11). As a consequence, total gold production in 2Q12 was 60,745 ounces, 19% lower than the 75,211 ounces reported in 2Q11. Accumulated total gold production in the first six-month period 2012 was 130,010 ounces, a 15% decrease when compared to 2011 (153,736 ounces).

Cash operating cost in 2Q12 was US$541.6/oz, 23% higher when compared to 2Q11 (US$441/oz). This was mainly explained by:
      1.   A 18% decrease in gold ounces produced
2. A 12% increase in reagents, basically explained by an increase in cyanide and sulfuric acid prices
3. Contractor costs increased 32% due to an increase in waste moved from areas with narrow veins

At Poracota, gold production in 2Q12 was 6,231 ounces, a 54% decrease when compared to 2Q11 (13,427 ounces) due to the aforementioned 15-day strike, lower ore grade and a decrease in the recovery rate (See Appendix 2). Accumulated gold production in the first six-month period 2012 was 17,551 ounces, 31% lower than the figure reported in 2011 (25,528 ounces). Cash operating cost was US$1,851/oz, 98% higher than the figure reported in 2Q11 (US$936/oz), mainly explained by the 54% decrease in gold ounces produced.

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