Drilling And Blasting - Study Mode
[#416] Which of the following is treated as base explosive?
Correct Answer
(D) TNT
[#417] If the guide ropes are clammped in shaft to the girders in under ground decking level shaft may extend only . . . . . . . . m below the girder level.
Correct Answer
(B) 2
[#418] If the black damp exceeds about . . . . . . . .% the atmosphere became non explosive irrespective of any percentage of firedamp.
Correct Answer
(C) 35
[#419] The maximum number of detonators issued to have in the possession of Shot-firer during a shift shall never exceed the
Correct Answer
(C) the number of shots fixed by CM
[#420] The instrument used for counting and size of suspended cloud of aerosois.
Correct Answer
(D) Royco particle counter