Gabon Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Madagascar was US$33 during 2016, according to the United Nations COMTRADE database on international trade. Gabon Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Madagascar - data, historical chart and statistics - was last updated on May of 2024.