Senegal Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to Niger was US$1.95 Million during 2018, according to the United Nations COMTRADE database on international trade. Senegal Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to Niger - data, historical chart and statistics - was last updated on May of 2024.