In case of opencast working, after shots are fired which of the following things a Shot-firer/Blaster shall do?
A. shall give all clear signal except in case of misfire
B. shall give all clear signal
C. shall not allow any person till the area is free from smoke, fumes
D. shall not allow any person until the area is sprayed
Answer: Option A
This Question Belongs to Mining Engineering >> Drilling And Blasting
Which of the following prime characteristic the nonel blasting has?
A. It has greater shock to the surrounding
B. It is noiseless in character
C. It has tremendous effect on explosive column
D. It can not be used in a place where there is a chance of stray current
A. Fire, Explosion
B. Gas, Outburt
C. Rockburst, bump
D. None
Cyclone, bag filter and scrubber can be used for control.
A. Water pollution
B. Soil pollution
C. Air pollution
D. Noise pollution
A two phase system in which an inner or dispersed phase is distributed in an outer called
A. Emulsion
B. Slurry
C. Explosion
D. Erosion
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