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J4 ›› 2002, Vol. 10 ›› Issue (4): 13-16.
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CHENG Wuchang ,ZHANG Hongmin
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Abstract:
To resolve the problem of mining in large thick ore body and recovery of ore pillar in Qiyugou mineral area ,two successful experiment s of medium-depth-hole mining have been made in 28 600 tons. From the result ,medium-depth-hole mining is a high effective method in mining low grade and t remendous breccia mass.
Key words: breccia mass, medium-depth-hole, experimentand study
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CHENG Wuchang ,ZHANG Hongmin. THE EXPERIMENT OF MEDIUM2DEPTH2HOLE MINING IN BRECCIA TYPED GOLD DEPOSIT OF QIYUGOU CHENG[J].J4, 2002, 10(4): 13-16.
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