Drilling And Blasting - Study Mode
[#341] The VOD of primer in m/sec in m/sec
Correct Answer
(C) 7000
[#342] In metal mining terminology development of mine means formation of . . . . . . . .
Correct Answer
(D) All of these
[#343] What do you understand by power of ventilation.
Correct Answer
(D) Rate at which work is done to maintain the air flow through a system
[#344] Lower inflammability of coal dust is . . . . . . . .
Correct Answer
(B) 1 gm/cc
[#345] Maximum velocities of ventilating air at working faces in development/depillaring
Correct Answer
(C) 4 m/sec