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In this Monday, Dec. 14, 2015, photo, Indian women use bare hands to pick reusable pieces from heaps of used coal discarded by a carbon factory in Gauhati, India. The world's biggest coal users – China, the United States and India – have boosted coal mining in 2017, in an abrupt departure from last year's record global decline for the heavily polluting fuel and a setback to efforts to rein in climate change emissions. (Photo by Anupam Nath/AP Photo)
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