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BHP (BHP) and Rio Tinto (RIO) are to invest a combined $4.5B to expand the Escondida mine in...
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Tuesday, February 14, 2012, 6:24 AM ETBHP (BHP) and Rio Tinto (RIO) are to invest a combined $4.5B to expand the Escondida mine in Chile, the world's largest copper mine, as they look to boost output to meet the growing demands from China and other emerging nations. BHP also plans to reopen its idled Pinto Valley mine in Arizona. (Rio PR, BHP PR .pdf)
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