Q141
Open questionCalorific value of bituminus coal rams from
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Mining Engineering · all questionsMine Supports and Strata Control
Mine Supports and Strata Control
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Q142
Open questionIn case of props employed for side supports, they should be set an angle of . . . . . . . . off the vertical, and feet well sunk in to the floor.
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Q143
Open questionIt is used to fit the prop in to stamp hole in the floor of the seam steeper than
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Q144
Open questionThe shear forces, intensity is heighest when the coal and floor beds are
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Q145
Open questionThe portion of the face at its end from where cutting starts called
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Q146
Open questionAngle of draw is
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Q147
Open questionThe subsidence that continues to occur after the compleating of depillaring known as . . . . . . . .
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Q148
Open questionThe crushing generally seam on . . . . . . . . pillars.
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Q149
Open questionOrigin of Indian coal seams on the basis of mode of accumulation can be explained by
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Q150
Open questionIn L/W mining advance supporting of gate roads upto 30 m from the face required due to . . . . . . . .
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Q151
Open questionThe strength of rock in pure stress within any aixal pressure termed as
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Q152
Open questionShield support has been employed in working a seam in one lift upto thickness of
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Q153
Open questionThe mining, geological and metallogical institute in India was established in the year
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Q154
Open questionIncrease of carbon in Iron make it
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Q155
Open questionThe diameter of bolt in slot and wedge types
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Q156
Open questionWhich type of prop can be easily withdrawn
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Q157
Open questionTo find and acquire a maximum number of non economic mineral deposits with a minimum cost is called
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Q158
Open questionStull support in metal mines is same as
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Q159
Open questionFriction prop is . . . . . . . . type of support.
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Q160
Open questionUnit of peak particle, velocity (PPV) is
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