Q181
Open questionReversal of air current of natural ventilation, occurs.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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911
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Q182
Open questionWhich factor is important in sealing . . . . . . . .
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Q183
Open questionAn explosion is accompanied by violence on . . . . . . . . scale.
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Q184
Open questionThe coefficient of friction measured in . . . . . . . .
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Q185
Open questionThe air lock designs are
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Q186
Open questionIn degree I mines the % inflammable gas is
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Q187
Open questionVOD of OCG is in m/sec
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Q188
Open questionThe useful power developed by air current called . . . . . . . .
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Q189
Open questionHigh shock loss occurs in a mine ventilation system at
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Q190
Open questionNearly flat gradients required for operation of thus haulage.
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Q191
Open questionThe process of inducing artificial respiration in a person who is unconsious and whose rate of breathing is feeble . . . . . . . .
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Q192
Open questionMoisture is given of during oxydation of coal, condensation of moisture deposition as beads on cooler surfaces the stage called . . . . . . . .
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Q193
Open questionFor installation of booster . . . . . . . . days notice to be given to JDMS.
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Q194
Open questionSodium phosphate liquifies at . . . . . . . . °C.
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Q195
Open questionIt is best to control noise at the
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Q196
Open questionWhen the oxygen percentage comes down to nearly 2 remains at that level or below for some weeks the fire may be considered to be . . . . . . . .
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Q197
Open questionThe strata temperature and crushing effect of superincumbent rocks of coal seam accelerate of
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Q198
Open questionFind the efficiency of the fan of the BHP is 45 and air hp is 15.
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Q199
Open questionThe main purpose of a Booster fan a mechanical ventilator usedbelow ground for
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Q200
Open questionVertical, steeply inclined passage driven downward movement of ore by gravity, not employed in coal mining.
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