Jack hammer drill used for vertically downward drilling upto a depth of . . . . . . . . m.
A. 1.2
B. 1.5
C. 1.8
D. 3
Answer: Option D
This Question Belongs to Mining Engineering >> Mining Machinery
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Coal cutting machine ropes are . . . . . . . . wire rope core.
A. Fibre
B. Steel strand core
C. Independent wire rope
D. All
The joining of ropes is termed as . . . . . . . .
A. Rope stitching
B. Rope splicing
C. Rope Stretching
D. Rope volcanizing
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