Q121
Open questionAbbrevation form of CMPDIL
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Mining Engineering · all questionsMine Supports and Strata Control
Mine Supports and Strata Control
practice.
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320
Questions
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Q122
Open questionThe immediate roof is called
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Q123
Open questionCavability of a roof bed in a long wall panel is affect by its
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Q124
Open questionFor testing a specimen in laboratory length's diameter ratio should be
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Q125
Open questionThe resistance which a body offers to being pulled asending by tensile force is called
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Q126
Open questionThe load on a prop when upper member is begins to sliders called
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Q127
Open questionFracture in blast hole is due to
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Q128
Open questionSchmidi Hammer rebound test is carried out in rock for determining.
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Q129
Open questionOne of the first culliery power station was installed in the year
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Q130
Open questionGypsum deposit is
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Q131
Open questionIn hydraulic prop, during the yeild, the oil pressure varies from
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Q132
Open questionHand packing is useful upto maximum gredient.
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Q133
Open questionThe Tensile strength in the rock is given by
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Q134
Open questionWhich drills are usually faster and simpler to operate and over all cost per foot are lower
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Q135
Open questionTimber bar act as
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Q136
Open questionFor equal resistance to crushing and bending the prop should have dia . . . . . . . .
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Q137
Open questionExpansion shell type bolt is
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Q138
Open questionTo make the roof stitching technique effective it is recommended that
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Q139
Open questionThe main purpose of releasing key in hydraulic prop.
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Q140
Open questionBest method of mining for controlling the subsidence is . . . . . . . .
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