The type of technology employed in sinking of shaft by drill shafts
A. Reaming
B. Pushing
C. Milling
D. All of these
Answer: Option A
This Question Belongs to Mining Engineering >> Coal Mining
Related Questions on Coal Mining
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
Join The Discussion