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More Mining Engineering Questions
The main mine fan has to run for all . . . . . . . . days.
All the layers of wires have same pitch or length of lay called . . . . . . . .
Which hold the water in the delivery column, if the pump stops, when the main valve is open.
The following data are provided for a surface mine to be excavated by a shovel: Production target : 10000 te/shift Available hours per shift : 6 hrs Shovel loading cycles per hour : 10 6 Bank density of the material mined : 2400 kg/m 3 Swing factor at 120° swing : 0.91 Bucket fill factor : 0.64 Utilization of available time : 83% No of working days in a year : 300 No of shifts per day : 3 The annual production target in Mte is
With reference to coward diagram, match the following the context of explosibility of a mixture of normal air and methane air O 2 % ; CH 4 % Mixture Status a. 20.5 ; 2.4 1. Impossible mixture b. 19.0 ; 9.5 2. Non explosive c. 17.0 ; 19 3. Potentially Explosive d. 20 ; 19.5 4. Explosive