The early indication of spontaneous heating of coal can be given by
A. Sweating of strata
B. Formation of CO2
C. Rise of temperature
D. None of the above
Answer: Option A
Related Questions on Mine Ventilation
The mechanical mixture of gases existing in a mine given off after explosion called
A. White damp
B. Stink damp
C. Black damp
D. After damp
A Drager Gas Mask does not filter
A. Water vapour
B. Nitrous fumes
C. Carbon monoxide
D. Carbon dioxide
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