Burundi Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to United States was US$152 during 2022, according to the United Nations COMTRADE database on international trade. Burundi Exports of niobium, tantalum, vanadium or zirconium ores and concentrates to United States - data, historical chart and statistics - was last updated on May of 2024.