- Highland Iro
- Columbite, Tantalite, Coltan, Zircon, Tin, Iron Ore.
- Address:15833 W 11 Mile Rd Southfield, MI
- Millennium Mining
- coltan, ore, tantalum.
- Address:2251 West Rampart Blvd #115 las vegas, nevada
- SouthernDiamond Trader
- Coltan, Rubies, Emeralds, Diamond.
- Address:4802 Anetta Drive Midland, Texa
- Ichiban Partners LTD
- Coltan Venezuela.
- Address:Parasasa 9D Willemstad, FL
- International Mediator
- Coltan, Tantalite, Niobium, Iron, Lead.
- Address:6601 Coventry St, New Orleans, LA, USA,70127
- Black Stone Metal
- coltan/tantalum ta205>37.07%nb205>17%.
- Address:4805 JAMES LOOP, killeen, Other, USA,76542
- Medici Mining
- tantalite, coltan, niobium.
- Address:USA
- Gold Export USA, LLC
- tantalite ore ta205 30-35%, coltan concentrate ore, iron ore, copper ore..
- Address:1 Research Court, Suite 450, Rockville, Maryland, USA,20850