Occurrence • Lead, Zinc, Vanadium

Producer • Aluminum

Past Producer • Lead, Zinc

Producer • Iron

Occurrence • Zinc, Vanadium, Lead

Producer • Zinc, Lead, Molybdenum, Vanadium

Occurrence • Aluminum

Producer • Niobium (Columbium), Tantalum

Unknown • Aluminum

Producer • Tungsten

Plant • Magnesite