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《Metal Mine》 2003-02
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Practice of Natural Stope-caving in Tongkuangyu Mine

Zhang Shumao(Tongkuangyu Mine,Zhongtiaoshan Nonferrons Metal Company)  
The over ten years' application of natural stope caving in Tongkuangyu Mine is reviewed since the mine began to use this method in 1989,its ore production has increasingly risen and now reached 4 million tons per year, the designed capacity, and its development ratio 230m 3 per ten thousand tons, one seventh that of pillar sublevel caving. The production cost of the natural stope caving in the mine is reduced by 30% when compared to that of pillar sublevel caving, and the unit cost of its run of mine ore is at the leading level among the mines of the same kind in China.
【CateGory Index】: TD853
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