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Luz del Cobre Mine Development and Construction


Luz del Cobre (Mexico - San Antonio de la Huerta, Sonora, Mexico)


The LdC project is located in San Antonio de la Huerta, in the state of Sonora, Mexico, approximately 160km east of Hermosillo, the capital city of Sonora.

The amount of mining, crushing and stacking, ore stockpiled and copper cathodes produced during the past eight quarters are as follows:

OPERATING RESULTS   Q3 2014 Q2 2014 Q1 2014 Q4 2013 Q3 2013(1) Q2 2013 Q1 2013 Q4 2012
Mining
Ore mined tonnes 248,408 283,480 331,465 293,355 248,342 230,432 185,742 239,649
Waste rock mined and removed tonnes 1,273,452 1,343,687 1,297,719 997,378 1,333,793 1,047,433 821,973 1,019,246
Total mined tonnes 1,521,860 1,627,167 1,629,184 1,290,733 1,582,135 1,277,865 1,007,715 1,258,895
Waste-to-ore ratio   5.1 4.7 3.9 3.4 5.4 4.5 4.4 4.3
Average grade of mined ore total copper 1.15% 1.16% 0.91% 0.84% 0.96% 1.25% 0.84% 1.02%
Crushing and Stacking
Ore crushed and stacked tonnes 250,133 279,910 319,457 292,329 241,599 230,326 181,992 291,848
Average grade of stacked ore total copper 1.15% 1.29% 1.03% 0.97% 0.96% 1.50% 0.99% 1.16%
Ore Stockpiled
Ore stockpiled at end of period tonnes 30,960 31,507 27,937 15,929 14,903 6,516 6,410 2,660
Average grade of ore stockpiled total copper 1.01% 1.06% 0.95% 0.84% 1.01% 0.94% 0.93% 1.05%
Copper cathodes produced
Copper cathodes produced tonnes 1,274 1,812 1,619 1,784 1,536 1,108 949 1,123
  1. Commercial production effective July 1, 2013.
  2. Pre-commercial production started on May 19, 2012.
Irrigation of the ore crushed to - 10 cm sizes and stacked on a valley shaped, lined leach pad commenced in March 2012. The experience since the date of first production of cathodes on May 19, 2012 indicates that the grades and tonnages of the mined ore conform with the block models used in the feasibility studies and that the ore is leaching according to the column tests and other tests done in a number of laboratories over several decades.
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