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More Mining Engineering Questions
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If the survey lines in a traverse done by compass survey are to be now retraced on the ground, then it is necessary to know the following on the date the survey was performed.
Workmen arrive at a mine workshop to receive tools for maintenance. The inter-arrival time of workmen at the service counter is exponentially distributed with an average time of 10 min. The service time at the counter is also distributed exponentially with a mean time of 6 min. The probability that there is a queue (more than one workman) at the service counter is,
For a seam inclined, 60° steep, 2 m thin the method of goaf control employed.