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METHOD OF LOCATING SAFE EXCAVATION ZONES IN FACE-ADJOINING AREA OF EXPLOSION-HAZARDOUS COAL BED
METHOD OF LOCATING SAFE EXCAVATION ZONES IN FACE-ADJOINING AREA OF EXPLOSION-HAZARDOUS COAL BED
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机译:在爆炸危险煤层工作面附近设置安全开挖带的方法
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摘要
the invention относитс to mountain промьшшенности and m. b. used in the design of coal seam prone to sudden угл and gas emissions.objective повьшение effectiveness through continuous контрол size r
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