- Unieast Enterprises Colombia, Ltd.
- COLTAN Columbite/Niobiu - Tantalun.
- Address:Carrera 7C # 122 No. 30 Bogota Cundinamarca Colombia
- ROYALFUJI NIGERIA LIMITED
- ZIRCON SAND,TIN ORE,COLUMBITE ORE,TANTALITE.
- Address:H 52 IKOTTA SHOPPING COMPLEX
- Bo Miners Company Limited
- Diamond,Gold,Columbite,Bo Miners Company Limited.
- Address:No: 27 Freetown Road Lumley, Freetown
- Orion Assets LTD
- tin ore, tantalite, columbite, gold, niobium, gemstones, coloured, tourmaline.
- Address:82 bingley court canterbury canterbury kent ct1 2sw United Kingdom
- Mastermind Integrated Concept LTD
- Zinc ore,Lead ore,Zircon,Columbite,Tin,Energy,Nuts and Kennels,Minerals.
- Address:8B Pam Dung Jik
- Abriana Mineral Resources Ltd.
- galenalead, ironore, columbite, tantalite, zincore, tin.
- Address:No 10 Agbo street Utan Jos Plateau 234 Nigeria
- OSYCHRIS INDUSTRIES NIGERIA LTD
- Zircon sand,Lead,Zinc,Iron ore,tantalite,copper,coal,limestone,columbite,manganese,Kaolin,Wolframite.
- Address:6 Herbert Macaulay Street, Ebute Metta
- Silverstream Ltd
- Lead Copper Tin Manganese ore,Metal Scraps,Urea Fertilizer,Cassava Chips,Cassava Chips,Beryllium Ore, Tin Ore, Columbite Ore, Tantalite.,Iron Ore Concentrate & Pellets.
- Address:14 / 16, Zhukovsky street
- David Mining Cooporations Sarl
- columbite, bauxite.
- Address:ivandry tananarive tananarive 101 Madagascar
- Fust Kenttopet International Ltd
- Copper Ore, Columbite Ore, Galena/Lead Ore, Iron Ore, Tin Ore, Titanium Ore, Manganese Ore And Wolfromite Ore.
- Address:Qinghaizu Building H, Apt 404, No.37 Yizhou Lu
- W.K.K. INTERNATIONAL TRADE CO.,LTD
- Columbite,Lead ore,Manganese ore,other raw matertial,srap copper.
- Address:2, Obaro odeghe road, Oke Alo estate, Gbagada
- SULEHMOMOH
- mnanganes,beryl,iron ore,columbite,zircon.
- Address:joseph gomwalk
- Bay Investment Ltd
- mining, zircon sand, columbite, minerals.
- Address:5 Regent Road Freetown Sierra Leone Sierra Leone
- Mcdor Resources Limited
- Copper Ore, Lead Ore, Zinc Ore, Zircon Sand, Tin, Columbite, Topaz, Spessarite, Beryl, Rhodolite,Non-metallic Mineral Deposit,Metal Mineral.
- Address:Unit 1006, 10 / F, MaxTrade centre No. 32 Luk Hop St, San Po Kong, Kowloon, Hongkong.
- Bremont Metals Venture LLC
- copper cathode, copper ore, gold, columbite-tantalite..
- Address:Other, Tanzania
- Indy Rock Ltd
- Tantalite, Niobium, Coltan, Columbite.
- Address:65 Siaka Stevens Street Freetown Western Region, Sierra Leone United States
- TITAW MINERALS DAS
- Tantalite,Cassiterite,Columbite,Wolframite,Coltan.
- Address:Calle 17# 68d-39
- ExcelMinas Industria Com Imp & Exp Ltda
- Tantalite Ore,Columbite Ore,Tin Concs,Lead cons,Mn containing Cobalt.
- Address:Rua Gen Izidoro Dias Lopes, 512
- Wamba Metals SPRL
- gold(nuggets and bars), copper(ore and cathode) , rough diamonds and coltan (columbite tantalite).
- Address:Victoria, DSM, kinondoni, Tanzania
- Kadomatos International Company Nigeria Limited
- Ginger, Hibiscus, Minerals Such As Columbite Ore, Tin Ore.,mineral.
- Address:Block 7 Flat 3, Gowon Estate Egbeda