Blasting is always done during
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Mining Engineering · all questionsOpencast Mining
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Which test determines the sensitivity of explosive to shock and impact.
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The mining method which does not distroy the land for agriculture and residential purposes.
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The output capacity of a drag line with 23 to 30m3 is million cu.m per year is
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Yeild of coal per kg of special gelatine (60 - 80%) is generally in manual quarry.
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Stripper shovels are mostly deployed for . . . . . . . .
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Drifters are generally designed to drill
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Electric drive preferred for . . . . . . . . machines.
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The bench of open cast have two elements they are . . . . . . . . and . . . . . . . .
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Ensure safety in very deep open cast mine and at external dumps, instrumentation being done to record slope stability.
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The stripping ratio for shavel dumper combination is . . . . . . . .
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In manual quarry the bench, height usually in hard rock.
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Shear needs electricity of
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Linear failure or plane failure is due to
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The mining lease is granted by . . . . . . . .
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Gradients of roads in quarries for tyred vehicular traffic should not exceed . . . . . . . .
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The limiting gradient of surface miner.
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The shovel used stripping top soil and making shallow cuts and benches upto depth of 3 - 6m is . . . . . . . .
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In which mining early extraction is possible with quick return.
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Where the over burden consists of soft rock which can be conveniently removed by
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