1. Blasting is always done during
2. Which test determines the sensitivity of explosive to shock and impact.
3. The mining method which does not distroy the land for agriculture and residential purposes.
4. The output capacity of a drag line with 23 to 30m3 is million cu.m per year is
5. Yeild of coal per kg of special gelatine (60 - 80%) is generally in manual quarry.
6. Stripper shovels are mostly deployed for . . . . . . . .
7. Drifters are generally designed to drill
8. Electric drive preferred for . . . . . . . . machines.
9. The bench of open cast have two elements they are . . . . . . . . and . . . . . . . .
10. Ensure safety in very deep open cast mine and at external dumps, instrumentation being done to record slope stability.
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