Drilling And Blasting - Study Mode
[#721] The reducing valve in self contained breathing apparatus, reduces the pressure supplied to the wearer and ensures of . . . . . . . . O 2 /minutes.
Correct Answer
(B) 2
[#722] First conference of safety in mines held in the year.
Correct Answer
1954 - 55
[#723] When stemming is insufficient then there is chance of
Correct Answer
(C) blown out shot
[#724] Power output of the fan called . . . . . . . .
Correct Answer
(B) HP of air
[#725] The corrugated hose pipe connected to hose masks forms an air . . . . . . . .
Correct Answer
(A) Resorvoir or equiliaser