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More Mining Engineering Questions
In an overburden bench of an iron ore mine the following data were found: Height = 10m Burden = 4m Spacing = 3m Sub-grade drilling length = 1m Collar stemming length = 3m If the diameter of the explosive column is 150 mm and the specific gravity of explosive and that of rock are 0.9 and 2.4 respectively, the powder factor in te/kg will be
A higher NVP is produced in the workings in . . . . . . . .
Which soil is best for scraper.
The value of ore is Rs. 600 per ton, production cost Rs. 400 per ton and cost of over burden removal is Rs. 50 per m 3 , the break even stripping ratio in m 3 /ton is
A piece of coal sample weighs 10 kg in air and 2 kg when immersed in water. The specific gravity of the coal sample is