The determination of percentage of inflammable gas shall be made or sample of air taken at suitable point fixed by the manager on the . . . . . . . . side of first working place and as the . . . . . . . . sides of last working place in the district.
A. Goaf, goaf
B. Intake, return
C. Stopping, airlock
D. None
Answer: Option B
This Question Belongs to Mining Engineering >> Mine Legislation And General Safety
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