- Highland Iro
- Columbite, Tantalite, Coltan, Zircon, Tin, Iron Ore.
- Address:15833 W 11 Mile Rd Southfield, MI
- rofax ventures inc
- coal from colombia and columbite.
- Address:357 Lake str. suite 401, newark, new jersey, USA,07104
- HIGHLAND IRON
- columbite/ tantalite (coltan) zinc and ti.
- Address:13459 Saint Andrews, Macomb, Michigan, USA,48089
- Reifarsmineral
- tantalite, tin, columbite, cassiterite.
- Address:Av Bukavu no 95, Goma (RD Congo), BP 279 San Francisco,
- Profax Ventures Inc
- coal from colombia and columbite.
- Address:357 Lake str. suite 401, newark, new jersey, USA
- HIGHLANDIRON
- Columbite, Tantalite, Zinc, Tin.
- Address:15833 W 11 Mile Rd
- TexPro Supply
- quartz, potassium feldspar, sodium feldstar, mica, beryl, columbite, tentalite, phosphate, cesium.
- Address:12723 Dakar Dr, Houston, USA
- Dag&Stacy Incorporation
- timber, coal , petroleum, tantalite, columbite.
- Address:35 ocean avenue valley stream new york 11580 United States
- Indy Rock
- coltan, tantalite, columbite, zircon, illemite.
- Address:Denver, Colorado, USA
- Indy Rock Ltd
- Tantalite, Niobium, Coltan, Columbite.
- Address:65 Siaka Stevens Street Freetown Western Region, Sierra Leone United States
- Highland Irons
- Columbite, Tantalite, Coltan, Zircon, Tin, Iron Ore.
- Address:15833 W 11 Mile Rd Southfield MI United States
- CSE Mining Services Group
- lead ore, zinc ore, tin ore, columbite, tantalite, precious stones.
- Address:Richmond, Texas, USA
- Oris Export LLC
- tantalite, columbite, marble, kaolin, gold, talc, gemstone, tourmaline, silica sand, feldspars, mica, granite, clay, garnet, gypsum.
- Address:Ancon CT, Edgewood, USA
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