Burundi Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Tanzania was US$9 during 2019, according to the United Nations COMTRADE database on international trade. Burundi Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Tanzania - data, historical chart and statistics - was last updated on May of 2024.