ABSTRACT
An opportunity of a rough estimation of volume of residual gas flow and the time it will be kept has shown itself in the case of “Yuznaya” mine, which was recognized as unpromising and therefore from 1996 the mining was completely stopped. Methane flow to this time was 89, 5 m3/min, including gas from the old gob areas of about 42 m3/min. The workers of the mine’s ventilation service carried out measurements of air-volume and methane concentration during all the time, right down to when the main fan was stopped.
