Drilling And Blasting - Study Mode
[#366] Drainage of water in a mine is effected by pumps which are designed depending on location as follows.
Correct Answer
(A) Face pumps
[#367] Incubation period not related to
Correct Answer
(C) Explosibility of coal dust
[#368] This factor do not have control over the circulation by natural ventilation.
Correct Answer
(D) Specific heat of air
[#369] During drilling, the hole gets filled with cuttings and has to be cleaned out frequently. This is done with the help of
Correct Answer
(C) sludger
[#370] In coal mines low velocities of air dangerous in the point.
Correct Answer
(B) Methane layering