Q55
An underground coal mine panel produces 520 tonnes per day deploying 220, 200 and 192 persons in three shifts. As per CMR 1957, the minimum quantity of air in m3/min to be delivered at the last ventilation connection of the panel is
A.
1120
B.
1320
AnswerC.
1220
D.
1550
Answer: Option B
Solution
Answer: Option B
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