The main combination is the production of zinc metal from zinc dost. 80 percent of the zinc mines are in the basement, 8 percent are open and the rest are combined with two open and underground forms.
In terms of the production of zinc metal, 64% of underground mines, 12% of open pit mines and 15% of combined mines are obtained.
In the case of other metals, the metal is rarely produced directly from the dust. To perform the condensation process, the mineral dust is crushed and then the other metals are separated, zinc concentrate is typically formed at 55% concentration, with little lead, copper and iron. The concentration process is often carried out at the mine site to minimize shipping costs.