Drilling And Blasting - Study Mode
[#481] The Type booster occupy only 1-2% of total explosive charge
Correct Answer
(B) PETN booster
[#482] Strength of any weight of explosive compared with the same weight of . . . . . . . .
Correct Answer
(A) Blasting gelatine
[#483] The temperature of the sealed of fire area is increasing or decreasing observed by means of . . . . . . . .
Correct Answer
(B) Thermometer
[#484] The reversal prevents the smoke and fumes from reaching the working.
Correct Answer
(B) Faces
[#485] In which of the following case the conditions requiring use of permitted explosives has not been made mandatory?
Correct Answer
(C) stone-drift if does contain coal dust