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Aerial view of the tailings produced by illegal gold mining in Mega 13, Madre de Dios region, Peru, on January 25, 2014, during a police operation. AFP PHOTO / Sebastian Castañeda (Photo credit should read SEBASTIAN CASTAÑEDA/AFP/Getty Images)

Aerial view of the tailings produced by illegal gold mining in Mega 13, Madre de Dios region, Peru, on January 25, 2014, during a police operation. AFP PHOTO / Sebastian Castañeda        (Photo credit should read SEBASTIAN CASTAÑEDA/AFP/Getty Images)