Drilling And Blasting - Study Mode
[#811] Working place means any place in a mine.
Correct Answer
(C) To which any person has lawful access
[#812] The inflammability of coal dust is dependent upon the percentage of . . . . . . . .
Correct Answer
Volatile matter
[#813] The axial flow fan is fitted with guide blades at the . . . . . . . . side.
Correct Answer
(C) Outlet
[#814] Major source of heat in u/g coal mines from
Correct Answer
(C) Oxidation
[#815] A PETN placed booster in a shot hole occupies only . . . . . . . . of total explosive change.
Correct Answer
(D) 30 - 40%