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More Mining Engineering Questions
A mining project is composed of five activities whose three time estimates in months are given below: Activity Estimated duration (months) Optimistic time Most likely time Permissible time 1 - 2 1 1 7 1 - 3 2 5 8 2 - 4 1 1 7 3 - 4 2 5 14 4 - 5 3 6 15 The expected duration of the mining project in months is
All surface structure and supports within a horizontal. distance of . . . . . . . . meters from all entrances to a mine shall be of fire proof material.
No person shall work or travel on any ledge or foot path less than . . . . . . . . meters wide from where he is likely to fall more than . . . . . . . . unless he is protected by guard rails fence or safety belt or rope suitably fixed and sufficiently strong to prevent him from falling.
Dust plan should be maintained in a scale of
The mixture of gases emanting from the strata of the coal mine contains ethane etc.