Q821
Open questionScraper also called
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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Q822
Open questionSilica gel in gas mask removes . . . . . . . .
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Q823
Open questionThe quantity per min should be of the working face.
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Q824
Open questionIn anemometer the vanes are set . . . . . . . . to the direction of air flow.
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Q825
Open questionPermitted explosives are still required to be used in any stone drift or sinking shaft when distance is within . . . . . . . .m of any coal seam or coal measures drift?
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Q826
Open questionThe shape of drill rods used in coal drilling with electric drill.
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Q827
Open questionLight weight barriers used at
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Q828
Open questionBy burning 1 kg of coal dust (having 75% carbon). How much CO will be produced?
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Q829
Open questionThe type of drill rods used in stone drilling
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Q830
Open questionCatalysist absorbs . . . . . . . . vapours.
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Q831
Open questionAt 273.15K (°C) enthalpy of air will be
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Q832
Open questionMinimum thickness of ventilation stopping is . . . . . . . .
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Q833
Open questionWhere a pair of taudem cages (accommodating 2 tubs) the finished diameter of shaft may be . . . . . . . .
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Q834
Open questionThe size of pillar increases with . . . . . . . .
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Q835
Open questionDoor should be open against the air so that air pressurenormally kept closed.
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Q836
Open questionFine dust of coal defined by its content of . . . . . . . . fraction particles.
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Q837
Open questionThe weight of 2 hr. duration drager apparatus of BG 174 is . . . . . . . . in kg.
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Q838
Open questionMochia mine is located in . . . . . . . .
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Q839
Open questionTo determine the velocity of air . . . . . . . . is essential inconjunction with anemometer.
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Q840
Open questionNote worthy example in Bullen's incline the length of crossmeasure drift is . . . . . . . . long.
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