Drilling And Blasting - Study Mode
[#411] Surface temperature influence on natural ventilation will be less or negligible in which situation.
Correct Answer
(D) In deeper mines
[#412] The gradient line is marked on the side by red lead . . . . . . . . of drift.
Correct Answer
(B) 1 m
[#413] Gelling agent in slurry explosive is
Correct Answer
(B) Startch
[#414] Generally inclines touch a coal seam at a vertical depth of . . . . . . . . meters in singareni group of mines:
Correct Answer
(C) 30
[#415] It is required in all inclined mouth, the safety contravence is . . . . . . . .
Correct Answer
(C) Interconnected stop block and runaway switch