Drilling And Blasting - Study Mode
[#646] A delay detonator has a delay element introduced between
Correct Answer
(B) fuse head and priming charge
[#647] The coefficient of friction in a staple pit without bunton.
Correct Answer
(D) 0.02256
[#648] The dust generally used for spraying in coal places.
Correct Answer
(A) Shale
[#649] For mine evaluation which is used . . . . . . . .
Correct Answer
(C) Both A and B
[#650] The number of shock waves accompanied by methane explosions.
Correct Answer
(B) 2