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METHOD OF SEALING-AWAY THE MINED-OUT SPACE OF ACTIVE STOPES
METHOD OF SEALING-AWAY THE MINED-OUT SPACE OF ACTIVE STOPES
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机译:封闭主动采空区的方法
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摘要
method of sealing of the space действуншщх treatment забоев,with the construction of artificial целиков along with subsequent изол цией preparatory for межцеликового space твердеющим material separate
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