The equivalent orifice formule in SI units.
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Mining Engineering · all questionsDrilling and Blasting
Drilling and Blasting
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The country rock present below the vein.
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The type of machinery used to clean the dust ladden air.
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A combination of u/g and o/c developed through . . . . . . . .
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An explosive, by virtue of its constituents, contains enough oxygen necessary to complete . . . . . . . .
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An memometers used where the air velocities between . . . . . . . .
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Which of the following explosives are recommended for solid blasting practice in underground coal mine?
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A high explosive like OCG, if used as booster occupies . . . . . . . . of the total explosive change.
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Self contained breathing apparatus, O2 cylinder have O2 containing . . . . . . . . L O2 compressed to . . . . . . . . kg/cm2.
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Pop shooting or plaster shooting is a type of
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Gas mask a self rescuer should not be used in at atmosophere containing more than . . . . . . . .% CO.
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If the fire is inaccessible, in goaf are, too extensive, danger of explosion, dealing with . . . . . . . .
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Magazine should be away from all buildings atleast . . . . . . . . meters.
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The reviving apparatus manufactured by the firm of Drager is known by the trade name . . . . . . . .
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Air velocity monitor measures the air velocity between . . . . . . . . using a vortex shedding sensor.
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In degree I gassy mines the rate of emission of gas m3/t of coal raised is . . . . . . . .
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It is an explosive compound, is a high explosive series as an oxidizing agent, also cooling agent same time is . . . . . . . .
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Air circulated by a fan, to less quantity, the following to be done . . . . . . . .
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The water gauge developed per stage in air screw fan rarely exceed . . . . . . . . mm.
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Q100
Open questionHow many types of air pressure hose rescue apparatus.
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