Drilling And Blasting - Study Mode
[#881] Heavy barriers used at
Correct Answer
(B) Possible site of explosion
[#882] In thick seams the thickness of coal in between.
Correct Answer
(C) 4.5 - 9 m
[#883] Booster having VOD of
Correct Answer
(C) 7000 m/sec
[#884] The disadvantage of incline is . . . . . . . .
Correct Answer
(B) Make of water in rainy season
[#885] The permitted explosive used in underground in solid blasting of all gassy mins.
Correct Answer
(C) Soligex