91. The static pressure, velocity pressure or total pressure can be measured by . . . . . . . .
92. In metric units the value of standard atmopsheric pressure is nearly . . . . . . . . kgf/cm2.
93. MSA is a marketing a methane monitor called
94. Forcing fan located at the mouth of . . . . . . . . shaft.
95. Stand by ventilation is required . . . . . . . . as per dams Gr 42 of 1972.
96. The percentage of Nitrogen present in mine air by volume.
97. CO2 produced in the mine due to
98. The cooling effect of the air depends not only on the
99. Chemical detector tubes which are sealed at both ends can be stored for . . . . . . . . years.
100. Black damp partially cleared away by sprikling
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