- C.I. WALMAR GROUP LTDA.
- TANTALUM,WOLFRAMITE,NIOBIUM,HAFNIO,sugar,TANTALUM.
- Address:cra 15 97-40
- TITAW MINERALS DAS
- Tantalite,Cassiterite,Columbite,Wolframite,Coltan.
- Address:Calle 17# 68d-39
- RoCK Minerales SAS
- Cassiterite,tin ore,wolframite,tungsten ore,tantalite.
- Address:
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