Requirements for reserves of all levels of boron deposits
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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