KIESA...31 1 ,660 432,000 Pb 0/0 5.14 5.10 5.10 3.21 Zn 5.13 3.17 3.17 2.21 Ag g/t 88.0 80.5 80.5 56.4 Average annual production from 1945 to 1990 was 580,000 t, and it is estimated,

Jan 28, 2021

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