FIELD: coal production industry. SUBSTANCE: method implies injection into bore-holes of methanogenic consortium of microorganisms with cultural medium upon determined interval of time after injection of water. Bore-holes are periodically blown with air during determined period of time. Used in function of methanogenic consortium is collecting microbe culture yielded on coal, and fermented sludge from methane tank. Combination of aforesaid features of method increases emittance of methane due to changing coal properties and widening availability of coal surface for microorganisms. In course of coal processing, microorganisms produce biogas consisting basically of methane and carbon dioxide. EFFECT: higher efficiency. 1 cl, 4 tbl, 1 ex
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