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METHOD FOR INCREASING EFFICIENCY IN PRELIMINARY WETTING THE PERMAFROST COAL SEAMS
METHOD FOR INCREASING EFFICIENCY IN PRELIMINARY WETTING THE PERMAFROST COAL SEAMS
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机译:提高永久冻煤层初湿效率的方法
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摘要
FIELD: mining. SUBSTANCE: coal is treated by heating to melt ice in small fractures and pores. EFFECT: restoring filtering capacity of the permafrost coal seams. 1 cl, 1 dwg
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