Q261
Open questionThe explosives commonly used in solid blasting.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
practice.
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Q262
Open questionThe velocity in ducts is measured by using
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Q263
Open questionAim of sealing of fire is . . . . . . . .
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Q264
Open questionThe total coal reserves are available in thick seams above 5 m is about in India.
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Q265
Open questionThe theoretical depression of forward blade fan given by the formula.
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Q266
Open questionSmoke helmet or hose mask works under continuous . . . . . . . . pressure.
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Q267
Open questionThe drilling pattern followed in small drifts
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Q268
Open questionHigher Nitroglycerene content of explosives, is better with . . . . . . . .
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Q269
Open question1 tonne air conditioning plant removes . . . . . . . . Kcal/hr, heat from the air passing through it.
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Q270
Open questionNumber of shelves in light weight barrier.
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Q271
Open questionWhen the barometric pressure decreases, the methane emmission in under ground work is . . . . . . . .
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Q272
Open questionOptimum rate of stone dusting in under ground coal mines is . . . . . . . .
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Q273
Open questionThe vertical depth of a place in the mine from surface.
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Q274
Open questionIntake air to a L/W panel has CO at 10 ppm and O2 at 20.5, where as return air has CO at 30 ppm and O2 at 20%. The Grahams ratio % for the oxidation process in pannel is . . . . . . . .
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Q275
Open questionThe deposit in shallow depth is approached by
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Q276
Open questionWhich law explains fluid flow
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Q277
Open questionThe isolation stopings should be well locked to roof, floor, sides, the minimum depth of locking should be in sand stone roof.
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Q278
Open questionThe percentage of sulphur present in gun powder.
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Q279
Open questionStrength of booster is
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Q280
Open questionThe main purpose of emergency stoping is . . . . . . . . the area immediately, prevent access of air into fire area.
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