Coltan.
Chromium ore and nickel ore concentrate.
Coltan.
Tantalite and tin.
Cassiterite Concentate.
Rare Earth And Coltan Tantalite.
Tantalite, columbite, fluorspar.
Lithium, cobalt, copper and other minerals and ores.Exporting
Coltan and coal.
Barite, copper.
Bauxite ore.
Mineral ore, columbite ore, tantalite ore, monazite ore, rutile ore, cassiterite ore.Trading
Tantalite.
Coltan, tantalite.
Coltan.
Copper, barite.
Coltan, And Other Minerals..
Ores and minerals like tantalite, columbite concentrate.
Lithium non refined and other minerals.
Zn ore, mn ore, cu ore, pb ore.