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METHOD OF PREPARING AND MINING GENTLY-SLOPING MINERAL SEAMS FROM AN OPEN MINE WORKING
METHOD OF PREPARING AND MINING GENTLY-SLOPING MINERAL SEAMS FROM AN OPEN MINE WORKING
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机译:从露天开采中制备和开采矿脉的方法
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摘要
the invention относитс to the mining industry and is дл training and the development of sedimentary (pi) with simultaneous removal of several table bov in block. the изобретени - improved security.
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