Q401
Open questionRotory drilling methods are classified in to
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Mining Engineering · all questionsCoal Mining
Coal Mining
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Q402
Open questionThe sketton rings are also called
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Q403
Open questionNumber of tonnes of sand required for stowing porton of coal extracted during depellaring . . . . . . . .
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Q404
Open questionMain purpose of mud flushing
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Q405
Open questionPurpose of Brace head in percussive drilling
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Q406
Open questionWorking coal in the pillars formed in the operation in bord and pillar mining is
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Q407
Open questionControlling the course of a bore hole so as to follow predetermined path . . . . . . . . is
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Q408
Open questionThe bricking curb also caned
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Q409
Open questionMinimum quantity of air flow required for solid blasting face is
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Q410
Open questionThe French method to suited to roof of
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Q411
Open questionCoal mine operations are phibited if, the common boundary is within
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Q412
Open questionWhich one as stated below is not falling under category "below ground" in the classification of accident place of work.
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Q413
Open questionChock sheild can work in steeply inclined seams upto max . . . . . . . .
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Q414
Open questionDeviation influenced by
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Q415
Open questionThe method of sinking through loose deposit of sand upto 20 m is
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Q416
Open questionFor manolithe concrete lining concrete in the proportion of
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Q417
Open questionBore hole deveation is . . . . . . . . degree from 30 m.
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Q418
Open questionCast iron pipe used
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Q419
Open questionThe input of sand in the mixing cone is measured calculated by an instrument
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Q420
Open questionPillar and stall method also known as
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