The temporary stoping have to be buitt in places which are free from . . . . . . . . movements and cracks.
A. Gas
B. Water
C. Fire
D. Ground
Answer: Option D
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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. Five, Explosion
B. Gas, Outburt
C. Rockburst, bump
D. None
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C. Air pollution
D. Noise pollution
A two phase system in which an inner or dispersed phase is distributed in an outer called
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