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the process of gas emission in a coal mine

Mine gas any of various harmful vapours produced during mining operations The gases are frequently called damps German Dampf “vapour” Firedamp is a gas that occurs naturally in coal seams The gas is nearly always methane CH 4 and is highly inflammable and explosive when present in the air in a proportion of 5 to 14 damp or carbon monoxide CO is a particularly ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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