91. Why a layer of coal is left against the shaley roof?
92. No repaired part be used in a . . . . . . . .
93. Which of the following certificate is considered as a valid first aid certificate for any persons working therein a mine?
94. Which section of Mines Act gives exemption from the section regarding hours of employment above & below ground?
95. Why heavy stone dust barriers are located farther from the face?
96. Where in any place in a mine, inflammable or noxious gas is detected, all persons shall be
97. Where the wet bulb temperature exceeds 30.5 degree C arrangements are made to ventilate the same with a current of air moving at speed of not less than . . . . . . . . meter/sec.
98. The cleaning of coal dust and spreading of incombustible dust shall be carried out in the direction of . . . . . . . . of air.
99. Which of the following attachment is used behind the set of ascending tubs?
100. When do the manager submit annual return if amine is abandoned?
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