FIELD: mining industry, more specifically, underground coal mining. SUBSTANCE: device has vessel for filling with methane coming from hole, hole casing and sealing members. Novelty consists in that vessel is made removable and provided with piston plug which opens and closes holes and inlet to vessel. Throat at vessel inlet has beads for its attachment to hole sealing device and channel in them sufficiently long for moving in it of handle of piston plug. EFFECT: higher efficiency. 4 dwg
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