Drilling And Blasting - Study Mode
[#191] The method of manual respiration used only when it is impossible to turn the patient on his face.
Correct Answer
(B) Sylvester's method
[#192] Upto what distance an underground coal mine face shall be treated in the manner specified in sub-regulation 3 of regulation 144 of CMR 2017 before firing in that face?
Correct Answer
(B) 18 m
[#193] In a mine of low resistance in single fan operating at . . . . . . . . efficiency.
Correct Answer
(B) Very low
[#194] The amount of stone dust deposited in each shell of heavy weight barrier.
Correct Answer
(D) 200 kg
[#195] To calculate the size of shaft pillar the scientific approach base on . . . . . . . .
Correct Answer
(B) Angle of draw