Q141
Open questionBy installing an auxiliarly fan a forcing fan is used below ground for ventilation.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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Q142
Open questionWhich explosive fired by safety fuse.
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Q143
Open questionLevel situated in between two main drives.
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Q144
Open questionThe instrument which directly indicates the air velocity in m/sec. any point of observation.
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Q145
Open questionThe plans regarding the rescue and stone dust brought upto date not less than once in . . . . . . . .
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Q146
Open questionAir velocities arereduced in the road ways and at the faceand coal dust formation lessened due to . . . . . . . .
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Q147
Open questionOne method of informing all workers of emergency situation of the mine is to pour . . . . . . . . oil in the intake of airstream. There by the smell spreads all parts of mine and workers come out.
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Q148
Open questionMoving front of any working place or the in bye end of gallery.
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Q149
Open questionWhat is the full form of PETN?
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Q150
Open questionSamples of atmosphere from behind the stopping should be collected at intervals, 48 hours after sealing . . . . . . . . interval.
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Q151
Open questionFor mine evaluation which is used . . . . . . . .
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Q152
Open questionThe number of shock waves accompanied by methane explosions.
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Q153
Open questionThe air quality parameter required to be monitored under the Indian National Ambient Air Quality Standards is . . . . . . . .
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Q154
Open questionThe instruments that are used to measure the velocity of air are
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Q155
Open questionLight type stone dust barrier should be installed in lognwall gate conveyor roads within a range of . . . . . . . .m from the nearest point of the face.
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Q156
Open questionA district separated from other districts by an artificial brick wall or by a long pillar of coal called . . . . . . . .
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Q157
Open questionIn degree II gassy mines the percentage of inflammable gas in the general body of air is . . . . . . . .
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Q158
Open question. . . . . . . . . has effect of reducing the air flowing in regulated split, same time increasing the volume of air flow in . . . . . . . . split.
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Q159
Open questionReversal of ventilation is easy in . . . . . . . . fan.
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Q160
Open questionThe smaples are collected in sampling bottles which are by . . . . . . . . and . . . . . . . .
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