2017-12-28

 Copper in London surged to the highest in almost four years after China ordered its top producer to halt output to combat winter pollution, fueling a rally this year driven by optimism about demand and supply disruptions at mines. Jiangxi Copper was told to cut production for at least a week before a new assessment is made on local pollution levels. Earlier in the month, the No. 2 smelter, Tongling Nonferrous Metals Group, was asked to make similar cuts. 

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