Ulexite, boric acid, lead, copper.
Copper, iron ore, manganese and its derivatives, manganese, lithium, mining scrap, lead cathodes and anodes , mining surplus, etc..
Copper ore, coal, copper mine, iron ore, lead ore.
Iron ore, copper ore, lead ore, molybdenum ore, rare earth, antimonium ore..
Tantalum (coltan), iron ore, scrap, copper, manganese, , lead, zinc, aluminum, coking coal, thermal coal.