Investor Relations- Reserves | SCC – Southern Copper Corporation

Reserves

Long-life reserves with strong capacity expansion plans

World-class reserves and exploration prospects
Increase copper production, reserves and continue exploration
Growth financed with internal cash generation after optimizing the debt structure

SCC Copper Reserves

a). See more about SCC copper reserves base on SEC requirements.

b). See more about SCC reserves base on long term copper price.

SCC copper reserves base on SEC requirements at December 31, 2010:

	PERUVIAN OPEN-PIT UNIT		MEXICAN OPEN-PIT UNIT		Total Open-Pit Mines	MEXICAN IMMSA UNIT (2)
	Cuajone Mine (1)	Toquepala Mine (1)	Buenavista Mine(1)	La Caridad Mine (1)	Total Open-Pit Mines	MEXICAN IMMSA UNIT (2)
Mineral Reserves
Metal Prices:
Copper($/lb.)	2.971	2.971	2.971	2.971	2.971	2.971
Molybdenum ($/lb.)	18.587	18.587	18.587	18.587	18.587	18.587
Cut-off grade	0.149%	0.157%	0.114%	0.126%	0.131%	-
Proven
Sulfide ore reserves (kt)	1,195,706	2,822,600	4,647,837	3,699,834	12,365,977	18,104
Average grade:
Copper	0.559%	0.508%	0.398%	0.227%	0.387%	0.470%
Molybdenum	0.019%	0.027%	-	0.028%	0.016%	-
Lead	-	-	-	-	-	0.180%
Zinc	-	-	-	-	-	2.830%
Leachable material (kt)	10,374	388,423	1,320,057	267,858	1,986,172	-
Leachable material grade	0.559%	0.143%	0.138%	0.200%	0.150%	-

Probable
Sulfide ore reserves (kt)	0.559%	0.559%	0.559%	0.559%	0.559%	0.559%
Average grade:
Copper	0.399%	0.311%	0.355%	0.198%	0.332%	0.510%
Molybdenum	0.016%	0.008%	-	0.028%	0.011%	-
Lead						0.800%
Zinc						3.050%
Leachable material (kt)	7,220	1,110,184	487,435	50.896	1,655,825	-
Leachable material grade	0.357%	0.100%	0.118%	0.175%	0.109%	-

Total
Sulfide ore reserves (kt)	2,626,178	3,530,468	6,532,884	4,633,891	17,323,421	47,526
Average grade:
Copper	0.472%	0.468%	0.385%	0.221%	0.371%	0.495%
Molybdenum	0.017%	0.023%	-	0.028%	0.015%	-
Lead						0.945%
Zinc						2.966%
Leachable material (kt)	17,594	1,498,607	1,807,492	318,844	3,642,537
Leachable material grade	0.476%	0.111%	0.133%	0.196%	0.131%	-

Waste (kt)	6,456,790	11,048,815	6,904,373	2,799,636	27,209,614	-
Total material (kt)	9,100,562	16,077,890	15,244,749	7,752,371	48,175,572	47,526
Stripping ratio	2.47	3.55	1.33	0.67	1.78	-

Leachable material
Reserves in stock (kt)	17,289	1,168,584	711,412	597,977	2,495,262	-
Average copper grade	0.509%	0.151%	0.124%	0.249%	0.169%	-
						-
In pit reserves (kt)						-
Proven (kt)	10,374	388,423	1,320,057	267,858	2,495,262	-
Average copper grade	0.509%	0.151%	0.124%	0.249%	0.169%	-
Probable (kt)	7,220	1,110,184	487,435	50,986	1,655,825	-
Average copper grade	0.357%	0.100%	0.118%	0.175%	0.109%	-
Total leachable reserves (kt)	34,883	2,667,191	2,518,904	916,821	6,137,799	-
Average copper grade	0.493%	0.128%	0.131%	0.231%	0.147%	-
Copper contained in ore reserves (kt)(3)	12,479	18.186	27,556	10,866	69,087	235

SCC reserves base on long term copper price at December 31, 2010

	PERUVIAN OPEN-PIT UNIT		MEXICAN OPEN-PIT UNIT		Total Open-Pit Mines	MEXICAN IMMSA (1)
	Cuajone Mine	Toquepala Mine	Buenavista Mine	La Caridad Mine	Total Open-Pit Mines	MEXICAN IMMSA (1)
Mineral Reserves
Metal prices:
Copper ($/lb.)	$1.800	$1.800	$1.800	$1.800	$1.800	$1.800
Molybdenum ($/lb.)	$11.000	$11.000	$11.000	$11.000	$11.000	-
Cut-off grade	0.203%	0.251%	0.213%	0.220%	0.223%	-
Proven
Sulfide ore reserves (kt)	959,460	1,947,165	2,866,827	2,051,244	7,824,696	16,071
Average grade:
Copper	0.588%	0.586%	0.505%	0.279%	0.0476%	0.500%
Molybdenum	0.019%	0.035%	-	0.028%	0.018%	-
Lead	-	-	-	-	-	1.250%
Zinc	-	-	-	-	-	2.970%
Leachable material (kt)	8,890	1,034,487	2,138,350	1,067,041	4,248,768	-
Leachable material grade	0.597%	0.214%	0.209%	0.170%	0.201%	-

Probable
Sulfide ore reserves (kt)	923,074	164,012	1,110,049	349,841	2,546,976	26,481
Average grade:
Copper	0.421%	0.387%	0.452%	0.250%	0.409%	0.550%
Molybdenum	0.016%	0.013%	-	0.028%	0.010%	-
Lead						0.840%
Zinc						3.090%
Leachable material (kt)	5,232	1,361,765	629,993	191,694	2,188,684	-
Leachable material grade	0.389%	0.136%	0.179%	0.160%	0.151%

Total
Sulfide ore reserves (kt)	1,882,534	2,111,177	3,.976,876	2,401,085	10,371,672	42,552
Average grade:
Copper	0.506%	0.571%	0.490%	0.274%	0.459%	0.531%
Molybdenum	0.018%	0.033%		0.028%	0.016%	-
Lead						0.995%
Zinc						3.045%
Leachable material (kt)	14,122	2,396,252	2,768,343	1,.258,735	6,437,452	-
Leachable material grade	0.520%	0.170%	0.202%	0.168%	0.184%

Waste (kt)	4,509,169	8,223,027	5,866,535	1,716,601	20,315,332
Total material (kt)	6,405,825	12,730,456	12,611,754	5,376,421	37,124,456	42,552
Stripping ratio	2.40	5.03	2.17	1.24	2.58

Leachable material
Reserves in stock (kt)	17,289	1,168,584	711,412	597,977	2,495,262	-
Average copper grade	0.509%	0.151%	0.124%	0.249%	0.169%	-

In-pit reserves (kt)
Proven (kt)	8890	1,034,487	2,138,350	1,067,041	4,248,768	-
Average copper grade	0.597%	0.214%	0.209%	0.170%	0.201%	-
Probable(kt)	5,232	1,361,765	629,993	191,694	2,188,684	-
Average copper grade	0.389%	0.136%	0.179%	0.160%	0.151%

Total leachable reserves (kt)	31,411	3,564,836	3,479,755	1,856,712	8,932,714
Average copper grade	0.514%	0.164%	0.186%	0.194%	0.180%
Copper contained in ore reserves (kt)(2)	9,599	16,128	25,079	85,694	59,5500	226

(kt) Thousand of tons

(1) The IMMSA unit includes the Charcas, Santa Barbara, San Martin, Santa Eulalia and Taxco mines. Zinc and lead contained in ore reserves as follows:

(in thousand tons)

Proven

Probable

Total

Zinc

477

818

1,296

Lead

201

222

423

(2) Copper contained in ore reserves for open-pit mines is (i) the product of sulfide ore reserves and the average copper grade plus (ii) the product of in-pit leachable reserves and the average grade of copper. Copper contained in ore reserves for underground mines is the product of sulfide ore reserves and the average copper grade.