The effect of breathing air containing CO in air is about 0.12 . . . . . . . .
A. headache
B. palpitation after 10 mm at work
C. death
D. unconsciousness
Answer: Option B
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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