Belgium Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Colombia was US$8.68 Thousand during 2022, according to the United Nations COMTRADE database on international trade. Belgium Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Colombia - data, historical chart and statistics - was last updated on June of 2024.