The giant Chilean Escondida mine produces more copper than anywhere on earth. Some 1.2m tonnes emerge from the BHP Billiton-run facility each year.
For the largest miners, Escondida also serves as a key measure for world copper output.
To meet global demand over the next decade, the industry “will have to add the equivalent of a new Escondida every 15 months”, says Jean-Sebastien Jacques, head of copper at Rio Tinto, which owns a minority stake in the mine. First Quantum, a mid-tier copper miner, says if China, India and Brazil reached EU levels of copper use by 2020, it would imply nine new Escondidas.
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