Dominica Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Barbados was US$370 during 2018, according to the United Nations COMTRADE database on international trade. Dominica Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Barbados - data, historical chart and statistics - was last updated on May of 2024.