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More Mining Engineering Questions
Samples shall be taken in such a systematic manner and at intervals not exceeding . . . . . . . . months.
The average vertical stress in a coal pillar of a B & P panel is found to be 8 MPa. The depth of the pillar and the average density of overburden rock are 200 m and 2500 kg/m 3 respectively. Assuming pillar stress to be the same in all coal pillars of that panel, the extraction ratio of the panel is
Why is horizontal development often done before vertical development?
The gallaries driven through the pillar for forming stooks called . . . . . . . .
The cross section of the sleeper used as cog.