The water bearing quality of seam is measured by the
A. Rate of pumping per hour
B. Total HP of pump installed
C. Ratio between the quantity of water pumped and ton of coal raised
D. Quantity of water pumped in a year
Answer: Option C
A. Rate of pumping per hour
B. Total HP of pump installed
C. Ratio between the quantity of water pumped and ton of coal raised
D. Quantity of water pumped in a year
Answer: Option C
The required water for 1 ton of sand in hydraulic sand stowing is . . . . . . . .
A. 800 l
B. 600 l
C. 1100 l
D. 1200 l
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