Q101
Open questionThe purpose of placing the oil bottle between drill and the receiver, when drill is working.
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Q102
Open questionThe rotational speed of drill rods by down the hole hammer drills.
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Q103
Open questionWell hole drill mast length ranges from . . . . . . . .
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Q104
Open questionPore water pressure affects
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Q105
Open questionThe width of bench floor in mechanised quarries is usually . . . . . . . .
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Q106
Open questionRippability of the rocks can be known with the instrument.
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Q107
Open questionThe number of blows produced by down the hole hammers bits.
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Q108
Open questionJack hammer drills upto a depth of
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Q109
Open questionThe stripping ratio for bucket wheel excavators is
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Q110
Open questionWhich are the explosives used in strip mining.
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Q111
Open questionThe output from surface continuous miner is million cubic meters per year.
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Q112
Open questionSofter rocks of over burden may be removed by a combination of
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Q113
Open questionThe air consumption is generally by Jack hammer.
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Q114
Open questionSelection of sovel bucket capacity depends on
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Q115
Open questionThe condition sutiable for external dumps are
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Q116
Open questionWhich of the following unique mining method is known as Novel method.
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Q117
Open questionThe slice thickness of 1.6 - 12 m. What is the action done by drag line formed?
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Q118
Open questionCircular failure is due to
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Q119
Open questionQuarry site has to be far away from residential area beyond.
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Q120
Open questionPneumatic tyres receders rapidly as the ground conditions are . . . . . . . .
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