Drilling And Blasting - Study Mode

[#556] Use of alternative to explosives may prevent raising of dust.
Correct Answer

(A) No

[#557] Which drivage is cheaper and quicker.
Correct Answer

(A) Incline

[#558] Air velocities in smooth lined roads . . . . . . . . m/sec.
Correct Answer

(B) 7.5

[#559] Which of the following statements is correct when presence of inflammable gas is detected in any place in a ventilating district?
Correct Answer

(C) no shot hole shall be fired

[#560] In Jharia, fire near Londna and Fire area was prevented from spreading further by installing the fire area by
Correct Answer

(C) N 2 producing machine