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More Mining Engineering Questions
For Indian coal mines, the 'maximum allowable concentration' of respirable dust containing 7.5% free silica in mg/m 3 is
Four benches are being worked by the opencast mining system. Height, width and face angle for each bench are 15 m, 50 m and 70° respectively. The overall slope angle of the benches in degrees is
In this stage of self heating, the petrol like odour comes.
The alarm range of BCO-1 CO detector . . . . . . . . of CO.
If any determination shows the percentage of inflammable gas to exceed . . . . . . . ., determinate shall be made or samples of air taken at intervals not exceeding . . . . . . . . hours. for so long as such content exceeds that percentage and for the seven next following days.