Coal Mining - Study Mode
[#256] Stowing pipe range consists of mainly . . . . . . . .
Correct Answer
(D) All of these
[#257] The line passing through all the corners of the stook under extraction at a time called
Correct Answer
(A) Line of goaf
[#258] By installation of booster punp instowing causes
Correct Answer
(B) Increases flow
[#259] Area of cross section of steel rods are
Correct Answer
(D) 38 mm 2
[#260] Double tube core barrel helps in
Correct Answer
(B) Exploratory drilling