The angle which a plane joining the crest of the quarry which the toe of the bottom most bench makes from the borizontal.
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In ultimate pit analysis the most widely used method is
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Permanent and semi permanent machines always powered by . . . . . . . .
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The output of the shovel with 2 cubic meter bucket is cu.m per year.
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The following requirements of electric power supply system in surface mines are
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Which motor improves power factor
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The diameter and depth of blast holes are generally kept constant depending on . . . . . . . . of equipment.
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Machines using crawler chains are not allowed to cross public-roads of they posses.
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Ripper is essentially of . . . . . . . . mounted.
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C.S.R means
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The mining which is uneconomic if beds are deeper depth.
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Why diesel powered excavators are popular.
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Over burden dumped to the . . . . . . . . of out crop.
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Scrapers are suitable in soils of . . . . . . . .
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Prior to starting of open cast working some trenches are excavated to expose mineral body. The trenches are very long but limited depth; what is approximate depth.
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Which dums are prefered in hilly terrain depsoits.
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The height of coal bench should not exceed.
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The depth of holes drilled by wagon drill ranges from
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The depth of drill holes ranges from . . . . . . . . by well hole drill machine.
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At what slice thickness the surface miner cuts the coal.
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