Coal Mining - Study Mode
[#376] Pumps are employed when the make of water in the shaft exceed
Correct Answer
(C) 100 L/min
[#377] Common rate of sand stowing in μ/g mines is A tons of sand per hour. Value of A is given by . . . . . . . .
Correct Answer
(A) 100
[#378] The number of panels to be opened at a time decided by
Correct Answer
(C) Capacity of direct haulage
[#379] Water infusion of coal face in ploughing causes.
Correct Answer
(D) Suppression of dirt
[#380] With AFC the length of single unit face commonly
Correct Answer
(B) 100