During extraction of coal . . . . . . . . will be left against the goaf.
A. Slice
B. Rib
C. Judds
D. Split
Answer: Option B
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