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
C. 1220
D. 1550
Answer: Option B
This Question Belongs to Mining Engineering >> Mine Ventilation
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