Q121
Open questionGeo phone suitable for detecting frequencies in the range of . . . . . . . .
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Mining Engineering · all questionsOpencast Mining
Opencast Mining
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Q122
Open questionIn dumper operation, specific fuel oil consumption can be controlled by . . . . . . . .
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Q123
Open questionThe height of bench for 10 m3 shovel is
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Q124
Open questionThe value of ore is Rs. 600 per ton, production cost Rs. 400 per ton and cost of over burden removal is Rs. 50 per m3, the break even stripping ratio in m3/ton is
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Q125
Open questionWhich is used for stripping top soil and making shallow cuts and trenches upto a depth of 3.5 - 6 m.
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Q126
Open questionSolomons formula used for calculating.
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Q127
Open questionIn order to avoid formation of toe in hard rocks the depth of shot hole should be
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Q128
Open questionLimiting gredient of drag line.
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Q129
Open questionCut holes are called
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Q130
Open questionThe line of intersection of the quarry side with the subadjacent unmined surface. Line defines the upper contour of openings.
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Q131
Open questionThe ratio at which the cost of open cast mining equals that of under ground mining is
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Q132
Open questionIn India coal seams with inclination as steep as . . . . . . . . have been worked by mechanical open cast.
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Q133
Open questionThe maximum size of the boulder that can loaded by shovel is times the bucket capacity.
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Q134
Open questionThe mining which is not completely effected by weather.
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Q135
Open questionPeak particle velocity is estimated from the equation.
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Q136
Open questionDepth to which extraction of mineral done economically by open cast project called . . . . . . . .
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Q137
Open questionLimitation for inclined drilling is . . . . . . . .
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Q138
Open questionWhich soil is best for scraper.
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Q139
Open questionDrag shovels commonly used to load into . . . . . . . .
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Q140
Open questionWhere drag line is used before starting excavation of coal a clear space of not less than . . . . . . . .m shall be created.
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