Though the charging, firing of shots in opencast working is not permitted within the danger zone but still it is permitted under the CMR 2017 only if which of the following is maintained?
A. The Blaster/Shotfirer shall ensure that all persons have taken proper shelter within the danger zone
B. Sufficient warning is given over the entire area
C. Both A and B
D. It is not permitted under any circumstances
Answer: Option C
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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