A view of the BHP Billiton's Escondida, the world's biggest copper mine, in northern Chile, in Antofagasta, Chile March 31, 2008. REUTERS/Ivan Alvarado/File Photo
The mining industry needs to bring online the equivalent of 17 more Escondidas, the world's biggest copper mine, by 2050, to meet demand projections, she said as an example of the scale of the problem.
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