11. The pilot hole is reamed from lower level to upper level called . . . . . . . .
12. Soutirage mining is also called . . . . . . . .
13. Ore loading in top slicing by . . . . . . . .
14. In the Rill stoping the dip must exceed . . . . . . . .
15. If the roof is strong, self supporting, tabular and flat deposit the method employed is . . . . . . . .
16. The support in blast hole stoping is . . . . . . . .
17. Which one of the following ropes can not be effective cable bolt?
18. The are is stocked in . . . . . . . .
19. The stoping suitable for steeply dipping, reasonably firm ore mixed graded ore with irregular boundaries and where ground surface is to be protected from subsidance.
20. Which of the following method may be approaching obsolescence and proved to be the most expensive of all mining methods.
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