For a shrinkage stope the following data values are given
| Insitu tonnage | 9000 tonne |
| Insitu grade | 5.2 g/tonne |
| Average grade of waste | 1.4 g/tonne |
| Loss of ore in the stope | 10% |
| Dilution | 20% |
A. 6.47
B. 4.57
C. 3.27
D. 5.47
Answer: Option B
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