Q621
Open questionWhen the mineral has to be raised from two or more seams or two levels by the same mine the arrangement has to be made in intermediate seam called . . . . . . . .
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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Q622
Open questionAccess in case of hilly terrain deposits.
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Q623
Open questionThe formula for BCF.
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Q624
Open questionShaft is made in
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Q625
Open questionProgress of dint header may be upto . . . . . . . .
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Q626
Open questionNo working of gallery in gassy mine which has approached within . . . . . . . .m of known dyke, shall be extended to a distance of . . . . . . . .m from the nearest ventilation connections unless the air is coursed upto a point within . . . . . . . .m from the face.
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Q627
Open questionThe air quantities in m3/sec calculated in the splits A and B respectively are
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Q628
Open questionThe mixture of calcium hydroxide and caustic soda called . . . . . . . .
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Q629
Open questionTo supress dust to be air brone, apart from water, what else is sprayed to mixed with it.
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Q630
Open questionWhat are the available delay numbers with copper tube only to be used with solid blasting?
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Q631
Open questionAir lock doors are required to be arranged where pressureon the door is
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Q632
Open questionA part of mine below ground has as an indipendent intake air way commencing from a main intake air way, and an indipendent return terminating at main return air way called . . . . . . . .
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Q633
Open questionBlasting off the solid was known as . . . . . . . .
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Q634
Open questionWhich of the following cut gives greater advance per round of blasting in tunnels or drifts of small area?
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Q635
Open questionThis is not a function of thermal emmissivity.
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Q636
Open questionIt is the ratio of the head at the operating point to Euler's head at zero capacity called . . . . . . . .
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Q637
Open questionVertical distance between two adjacent main levels, main horizone (or) main drives.
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Q638
Open questionThe time interval lapses between application of a source of ignition to fire damp and the actual moment of ignition of gas called . . . . . . . .
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Q639
Open questionSoda acid extinguishers suitable only for quency.
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Q640
Open questionSingareni coal field has become a government company in . . . . . . . .
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