For a seam inclined, 60° steep, 2 m thin the method of goaf control employed.
A. Caving
B. Stowing
C. Strip packing
D. Regid prop
Answer: Option B
A. Caving
B. Stowing
C. Strip packing
D. Regid prop
Answer: Option B
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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