25% of black damp (75% air, i.e. 15% O2 air 3% CO2) the physiological effect will be causes is
A. headache
B. panting
C. deeper breathing
D. breathing doubled
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
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