A person at walking at 3 km/hour consumes nearly . . . . . . . .
A. 0.52 L/min
B. 0.68 L/min
C. 0.88 L/min
D. 0.78 L/min
Answer: Option D
This Question Belongs to Mining Engineering >> Mine Ventilation
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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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