The tool used in percussive drilling in very hard strata
A. 'V' Chisel
B. Clay Augr
C. Worm Augr
D. 'X' Chisel
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