Q761
Open questionNumber of holes drilled in one shift of eight hours in stone face.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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Q762
Open questionIn fan, the air has no pre-rotation before entering the impeller this entering of air is called
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Q763
Open questionThe percentage of potasium nitrate present in gun powder.
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Q764
Open questionThe sum of kinetic energy and pressure energy called . . . . . . . .
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Q765
Open questionAn organisation developed for petrolium export countries called . . . . . . . .
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Q766
Open questionThe Nationalisation of coal industry was done on . . . . . . . .
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Q767
Open questionUnderground coal mines are in principle ventilated by exausting system, so that
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Q768
Open questionGas mask bottom most layer consist of
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Q769
Open questionThough 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?
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Q770
Open questionCarbide lamps can with stand air velocity of
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Q771
Open questionFor reducing leakage in u/g workings it has been recommended to use.
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Q772
Open questionThe constituents in slurry explosive are
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Q773
Open questionAir lock doors opening towards the DC shaft against air pressure, the third door open in . . . . . . . . direction.
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Q774
Open questionA spot on the floor from where gravity fed are of a higher level is loaded into tubs a mine caves.
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Q775
Open questionAir velocities in shaft with regid guides and fan drifts . . . . . . . .
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Q776
Open questionEach person consumes . . . . . . . . litters of O2 per minute/
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Q777
Open questionThe isolation stopings should be well locked into the roof, floor, sides, the minimum depth of locking should be in coal.
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Q778
Open questionTo deal with the slope problem in OC mine the blasting system should be
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Q779
Open questionHindustan zinc limited, Zawar in
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Q780
Open questionSplits reduce the doors on haulage roads but increase number of . . . . . . . .
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