Drilling And Blasting - Study Mode
[#381] The air lock designs are
Correct Answer
(D) All of these
[#382] In degree I mines the % inflammable gas is
Correct Answer
(A) Less than 0.1
[#383] VOD of OCG is in m/sec
Correct Answer
(A) 6000
[#384] The useful power developed by air current called . . . . . . . .
Correct Answer
(B) HP of ventilation
[#385] High shock loss occurs in a mine ventilation system at
Correct Answer
(D) 90° square bent