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METHOD OF PREVENTING SUDDEN COAL AND GAS OUTBURSTS WHEN EXCAVATING COAL IN DEVELOPMENT WORKINGS

机译:在开发工作中采煤时防止突发的煤和瓦斯的方法

摘要

.the invention относитс  to mining industry and improves the efficiency of предотврашени  sudden release during drilling wells diameter equal or more 300 mm, from the operational,контрол  выбросоопасн
机译:这项发明适用于采矿业,并提高了钻井直径等于或大于300毫米的钻井过程中突然释放的效率,该效率可从运营中的контролвыбросоопасн

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