Drilling And Blasting - Study Mode
[#236] The fittings in fire stopping are
Correct Answer
(D) All of these
[#237] Smoke helmet made of tough . . . . . . . .
Correct Answer
(B) Polyathene
[#238] Drivage along apparent dip is . . . . . . . .
Correct Answer
Level
[#239] Stratum is reffered as inclined if general inclination in between.
Correct Answer
(A) 5° - 18°
[#240] For every 1% of fire damp . . . . . . . .% of additional stone dust is required for efficient stone dusting.
Correct Answer
(D) 10 - 14%