For judging a working place suitable for man to work efficiently, without discomfort it is necessary to know.
A. temperature of air at working place
B. relative humidity of the place
C. air velocity
D. all of these
Answer: Option D
This Question Belongs to Mining Engineering >> Mine Ventilation
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
Join The Discussion