In Indian coal mining, first time an attempt made for extraction of 4.5 m in single shift at a mine with shield support.
A. Sudamdin
B. GDKIO incline
C. Moonidin
D. Kottadin
Answer: Option D
This Question Belongs to Mining Engineering >> Coal Mining
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The required water for 1 ton of sand in hydraulic sand stowing is . . . . . . . .
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