Q661
Open questionThe increased temperature of wet bulb indicates.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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Q662
Open questionCarring of high voltage cables from surface to substation near pit bottom prohibited through UC shaft because of . . . . . . . .
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Q663
Open questionWhat type of explosives selected to get lump coal.
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Q664
Open questionThe General arrangement is to sink two shafts close to each other separated by . . . . . . . ., for facility of a quicker inter communication.
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Q665
Open questionTo get lump coal or to minimize the coal dust the blasting technique adopted is
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Q666
Open questionA person doing heavy work breaths at a rate of nearly . . . . . . . . Breaths.
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Q667
Open questionThe newest unit of Coal India Limited is . . . . . . . .
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Q668
Open questionThe head characteristic of the forward blade centrifugal fan at first with increasing capacity until it flattens, then raising trend before starting to fall again. This indicates the lower loss of head at low capacity which is mainly due to
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Q669
Open questionNon coaking coal mines of India was Nationalised in the year.
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Q670
Open questionWhich is the deepest mine in world.
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Q671
Open questionA roadway driven along strike of seam.
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Q672
Open questionIf after charging a shot-hole inftammable gas is found in any place within . . . . . . . . radius no shot hole shall be fired until the place is cleared of gas. Fill up the blanks.
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Q673
Open questionA second barrier (heavy type) should be placed further outbye at . . . . . . . .m from the face.
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Q674
Open questionThe reviving apparatus usually the rate of flow ranging from . . . . . . . . lits/mins according to the rate and depth of patient's breathing.
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Q675
Open questionSurface temperature influence on natural ventilation will be less or negligible in which situation.
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Q676
Open questionThe gradient line is marked on the side by red lead . . . . . . . . of drift.
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Q677
Open questionGelling agent in slurry explosive is
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Q678
Open questionGenerally inclines touch a coal seam at a vertical depth of . . . . . . . . meters in singareni group of mines:
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Q679
Open questionIt is required in all inclined mouth, the safety contravence is . . . . . . . .
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Q680
Open questionWhich of the following is treated as base explosive?
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