CASE STUDY THE CUSTOMER El Teniente, a division of Codelco Chile, located at 80 Kilometers south of Santiago and 2,500 meters above sea level, is the largest underground copper mine in the world. El Teniente has been in operation since 1904 and has a total of 2,400 kilometers of underground tunnels. El Teniente produces 403,616 metric tons of fine copper per year, in the form of ingots refined at fire (RAF) and copper cat

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