Bore hole deveation is . . . . . . . . degree from 30 m.
A. 4°
B. 3°
C. 2°
D. 1°
Answer: Option C
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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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