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Mining Engineering Miscellaneous In Mining Difficulty: Medium

The lumen output of fluorescent discharge tube being as much as . . . . . . . . times that of the incandescent filament bulb.

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More Mining Engineering Questions

There are 50 lemon trees in a reclaimed mine area. Each tree produces 800 lemons per year. For each additional tree planted in this area, considering all trees, the output number of fruits per tree drops by 10 lemons in a year. The number of trees that to be added to the existing reclaimed area in order to maximise the total number of lemons in the year is What should be the minimum pressure to be maintained at the nozzle in hydraulic mining operation? The clear space of not less than . . . . . . . . m, where there are two or more tracks also between the adjacent tracks. The pump casing for a centrifugal type of pump, typically spiral or circular in shape . . . . . . . . Which only occurs when the pump is above the inlet reservoir . . . . . . . .