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More Mining Engineering Questions
Which of the following locomotive is not recommended to be used where the coal is liable to spontaneous heating?
Calculate the w.g of a fan has to develop for ventilation tunnel under following conditions. The surface area is 2160 m 3 ; Area = 7.2 m 2 . Coeff. of resistance 0.00161 mm of wg/m 3 . Quantity of air passing is 6 m 3 /sec.
Hole made by rotating helical screw blade called
Samples of coal dust in the mine with stone dust should be taken at regular intervals of . . . . . . . . days.
The formation of benches the angle of slope should not exceed.