Drilling And Blasting - Study Mode
[#451] The plans regarding the rescue and stone dust brought upto date not less than once in . . . . . . . .
Correct Answer
(D) 3 months
[#452] Air velocities arereduced in the road ways and at the faceand coal dust formation lessened due to . . . . . . . .
Correct Answer
(C) Splitting
[#453] One method of informing all workers of emergency situation of the mine is to pour . . . . . . . . oil in the intake of airstream. There by the smell spreads all parts of mine and workers come out.
Correct Answer
(C) Eucalyptus oil
[#454] Moving front of any working place or the in bye end of gallery.
Correct Answer
(C) Face
[#455] What is the full form of PETN?
Correct Answer
(C) penta erythritol tetra nitrate