The site selection conditions and other details of establishing a reserve station in a mine can be specified by
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Preparatory stoppings also called as . . . . . . . .
A. Emergency stoppings
B. Isolation stoppings
C. Fire proof stoppings
D. Explosion proof stopping
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CO produced by O2 absorbed the ratio is called . . . . . . . .
A. Grahams ratio
B. Willets ratio
C. Crowds ratio
D. Boyles ratio
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The weight of chemical oxygen breathing apparatus SAR-30.
A. 3.7 kg
B. 4.7 kg
C. 5.7 kg
D. 2.7 kg
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Ascensional and homotropal ventilationis normally adopted to ventilate in inclined longwall face is
A. Partially incorrect
B. Partially correct
C. Incorrect
D. Correct
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In this process, holes can be drilled from surface or underground working at any angle to the horizontal and used mainly for coring. The drilling process is called
A. churn drilling
B. percussive drilling by rods
C. diamond drilling
D. tubular drilling
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The mine manager, on getting information of fire has to inform the . . . . . . . . and also near by . . . . . . . . station.
A. JDMS, Fire
B. DDMS, Loco station
C. JDMS, Water
D. JDMS, Rescue
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The coal drill run by the voltage of
A. 100 V
B. 120 V
C. 230 V
D. 110 V
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The oxygen of the exhalaled breath is reused is called . . . . . . . . apparatus.
A. Open circuit
B. Reganarative
C. Semi Circuit
D. None
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Alluvial mining is done in . . . . . . . .
A. Mineral deposit
B. Glacier deposit
C. Placer deposit
D. All the above
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Air velocities in main haulage roads be . . . . . . . . m/sec.
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Which of the following is used as a fuel in an explosive?
A. sodium nitrate
B. sulphur
C. sodium chloride
D. nitroglycerine
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In long drifts the gredient and direction of drifts maintain in recent year by using
A. Laser adjusting system
B. Ray analyser
C. Optical system
D. Gyro theodolite
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Which of the following person in employees of mines.
A. A person who appointed at residential area of mines
B. A person who appointed at gathering point of mine
C. A person who appointed apprenticed by mine
D. A person who worked with knowledge of Manager
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Auxiliary shafts generally used for . . . . . . . .
A. Hoisting mineral
B. Material hoisting
C. Ventilation
D. Filling material
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Prospecting License, is given for maximum . . . . . . . .
A. 2 years
B. 3 years
C. 4 years
D. 10 years
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The colour of Ammonium Nitrate.
A. Black
B. White
C. Red
D. Pink
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The formule for theoritical depression of radial bladed fan will be
A. H = g U 2
B. H = g V 2
C. H = g U cot 2 θ
D. H = 2 g U 2
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Equivalent orifice of mine in reference to the ventilation of the mine is related to
A. Air veolcity of split
B. R.H
C. Temperature
D. Resistance
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As per CMR 2017, in order to use two types of explosives in any shot-hole, the Manager has to perform which of the following statutory duties?
A. Manager shall see the test trial made in other mine units
B. Manager shall frame and enforce standing orders
C. Safety Officer shall be advised to discuss it in Safety committee
D. Manager shall put it into ISO meeting for decision
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