Q341
Open questionThe size of the incline usually, in case of travelling way.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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Q342
Open questionBrattice cloth used in under ground should be . . . . . . . .
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Q343
Open questionAmmonia is not used in u/g coal mine as it is . . . . . . . .
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Q344
Open questionThe formula for finding the law of mine air friction where P = . . . . . . . .
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Q345
Open questionVertical pit from one underground working place to another working place, does not extend to surface called . . . . . . . .
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Q346
Open questionAir samples from behind stopping should be drawn during period of . . . . . . . . barometer.
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Q347
Open questionCTC fire extinguishers use for to extinguish
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Q348
Open questionIn case of reversal of air flow of the fan pressure - volume flow characteristics (P-Q) will indicate
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Q349
Open questionThe values of the Angle of draw to the dip side workings to the rise side workings have . . . . . . . .
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Q350
Open questionRise of dry bulb temperature due to auto compression per 100 m depth is
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Q351
Open questionAnemometers are used to measure air velocities between.
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Q352
Open questionThe method of manual respiration used only when it is impossible to turn the patient on his face.
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Q353
Open questionUpto what distance an underground coal mine face shall be treated in the manner specified in sub-regulation 3 of regulation 144 of CMR 2017 before firing in that face?
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Q354
Open questionIn a mine of low resistance in single fan operating at . . . . . . . . efficiency.
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Q355
Open questionThe amount of stone dust deposited in each shell of heavy weight barrier.
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Q356
Open questionTo calculate the size of shaft pillar the scientific approach base on . . . . . . . .
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Q357
Open questionThe minimum distance from centre to centre, if the depth of the seam 450 m and gallery width is 4.8 m.
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Q358
Open questionThe state of fire, composition of gases and their pressure conditions behind the sealed of area can be known by means of . . . . . . . .
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Q359
Open questionGodbert-Greenwaid apparatus used for
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Q360
Open questionWhat recommendation has been made in CMR for firing large number of shots?
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