Research on the Mining Method of the Deep Ore-body of No.2 Pit of Jinning Phosphate Mine under Yunnan Phosphate Chemical Group

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Research on the Mining Method of the Deep Ore-body of No.2 Pit of Jinning Phosphate Mine under Yunnan Phosphate Chemical Group

LI Xiao-Shuang, LI Yao-Ji, WANG Meng-Lai

Metal Mine . 2015, (03): 44 -47 .