Upward drivage of shaft carried out for a distance up to
A. 45 m
B. 35 m
C. 25 m
D. 15 m
Answer: Option D
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