The CO2 absorbent placed in breathing bag, weights of absorbent is . . . . . . . .
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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The road header machines are capable of cutting rock which are not . . . . . . . .
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Cordex is a
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Class 'B' fires involve liquids generally quenched by . . . . . . . .
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Oxygen gas liquifies at . . . . . . . .
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Safe working velocity should not exceed at places where carbide lamps used . . . . . . . .
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In hosemask, a currugated tube between the mask and air tube or rubber . . . . . . . .
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These type of explosives not used in under ground coal mines.
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The temporary stoping have to be buitt in places which are free from . . . . . . . . movements and cracks.
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Every mine should have at least.
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Regulator can not be placed in . . . . . . . .
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The venture tube blower having a convergent - divergent tube is more efficient and increase the flow of air by
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Which of the following detonators are used mostly in oil and mineral prospecting?
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Ammonium Nitrate does not occur in nature and it is prepared by reacting with ammonia gas with . . . . . . . . acid.
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The fan efficiency is given by . . . . . . . .
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Permitted explosives used in mines have a VOD ranging from in m/sec.
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Minimum quantity of air required for ventilation of coal mine depends on
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The coolest used in 1 hr. apparatus of proto mark V apparatus.
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Shape factor is defined by . . . . . . . .
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The quantity of air has to be increased from 1500m3 to 3000 m3/mm, what will be effect on H. P of the fan.
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