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More Mining Engineering Questions
A balanced transportation problem is characterised by
It is the property by virtue of which it allows water to travel through its pore-spaces or other openings and found to be proportional to the square of the diameter of the grains forming the rock.
The signalling appliance shall be examined by a competent person once at least in every . . . . . . . .
Air of 20.8% O 2 , concentration enters a coal mine panel at 20 m 3 /s and exits with 20.6% O 2 . The oxygen depletion is due to oxidation of carbon in spontaneous heating process only, assuming the density of oxygen as 1.3 kg/m 3 and the calorific value of carbon as 34 MJ/kg, the heat generated in kW from the panel due to spontaneous oxidation is
Dust plan shall be maintained in every mine having working below ground plan on a scale having representative factors of not less than . . . . . . . . clearly, showing by distinctive colours, code letters and numbers.