Drilling And Blasting - Study Mode
[#741] Stone dust used for dusting, should not contain more than . . . . . . . .% silver.
Correct Answer
(C) 5
[#742] Inclines are usually steeply dipping at
Correct Answer
(A) 1 in 4
[#743] What is the nature of flow of air in mines?
Correct Answer
(B) Turbulent
[#744] How strong is the NONEL tube.
Correct Answer
(C) +80°C/20 kg
[#745] Haldene apparatus used for
Correct Answer
(C) Mine air composition