If the depth of the shaft exceeds 1000 m but not 1500 m, no winding rope shall be used or continued to use, if its factor of safety is becomes less than . . . . . . . . in metal mines.
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Mining Engineering · all questionsMetal Mining
Metal Mining
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In cut and fill stoping is done by . . . . . . . .
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The method of stoping suitable to extract thick ore body strong ore, stable handling and footwall steeply dipping ore is . . . . . . . .
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The friable rock in cut and fill method is supported by . . . . . . . .
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The number of persons required for collection of samples in u/g.
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The sublevel interval does not depend on in metal mines.
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In this method of stoping the large diameter downward parallel holes drilled for blasting.
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The channel sampling is applicable in . . . . . . . . to collect samples.
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In India Alimak Raise climber introduced first time in which mine.
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The technique of VRM is different from long hole mining from the point of view off
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Black Iron ore is . . . . . . . .
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Wide stall method procticed by . . . . . . . .
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The pillar which is left for support of upper level during extraction called . . . . . . . .
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Zinc deposit is formed by geological process is . . . . . . . .
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Gestation period is . . . . . . . .
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Jack hammer assisted with air legs is used in drilling of . . . . . . . .
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The method of stoping selected if the ore is very weak, moderately dipping with very weak host rock.
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The method of stoping successfully applied to all dips from horizontal to vertical.
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The interval between two sample places called . . . . . . . .
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In this method blast holes drilled in upward but not in ring fashion.
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