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2019-9-4noteshina most coal mining in china uses the underground longwall mining techniquet was reported in 2009 that china intended to establish eight to ten large mines with an output of "around 50 mt" each in the states of shanxi, shaanxi, inner mongolia, and ningxian 2011, peabody energy and the province of xinjiang signed an agreement to develop a 50 mtpa surface mine in xinjiang.

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