BHP Looks to Slash Copper Costs

China imported more than six million tons of copper concentrate through May, 34 percent more than a year earlier, in a sign that demand will pick up. Copper prices have been falling, but the world's biggest miner isn't worried. BHP is testing an extraction process that it hopes will slash costs and boost output from its biggest mine in Australia to meet an anticipated surge in demand. Bloomberg's Paul Allen reports. (Source: Bloomberg)

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