Coal Mining - Study Mode
[#426] In level mining, a level road way along the floor of the seam and extending upto the boundary of the mine called . . . . . . . .
Correct Answer
(C) Floor lateral
[#427] P 5 explosive should have more than . . . . . . . .% of NaCl.
Correct Answer
(D) 30
[#428] Hand packing useful upto maximum gradient.
Correct Answer
(C) 25°
[#429] The method of sinking through loose deposit of sand upto 60 m
Correct Answer
(B) Open Caisson
[#430] Wary undulations developed in rocks, whenever the region is subjected to severe pressure
Correct Answer
(C) Dyke