11. The output from surface continuous miner is million cubic meters per year.
12. Softer rocks of over burden may be removed by a combination of
13. The air consumption is generally by Jack hammer.
14. Selection of sovel bucket capacity depends on
15. The condition sutiable for external dumps are
16. Which of the following unique mining method is known as Novel method.
17. The slice thickness of 1.6 - 12 m. What is the action done by drag line formed?
18. Circular failure is due to
19. Quarry site has to be far away from residential area beyond.
20. Pneumatic tyres receders rapidly as the ground conditions are . . . . . . . .
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