Introduction To Mining Engineering - Study Mode
[#376] The method of mining a coal seam 8.5 m thick is by
Correct Answer
(A) B & P method in lifts
[#377] Among the following options, the specific energy for rock-drilling is lowest in
Correct Answer
(C) percussive drilling
[#378] Existence of fire in underground coal mine is established by
Correct Answer
(C) Graham's ratio
[#379] A block ore between two levels 30 m apart is 40 m long. The ore body thickness, specific gravity and grade are 2 m, 2.8 and 2% respectively. The tonnage of copper available in the block of ore is
Correct Answer
(A) 134.4
[#380] Filling up of the void in opencast mines is known as
Correct Answer
(C) reclamation