Boron deposit reserve ratio required design levels in the table below.
Boron deposit level reserves ratio table
Mine Design Institute B 2 O 3 reserves (10 4 t) | Proportion of reserves at all levels (%) | ||
Class B | Class C | Class D | |
>20 | 10-20 | 70～80 | 0～20 |
8~20 | 5~10 | 65~80 | 10~30 |
2-8 | - | 60～80 | 20~40 |
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