Sierra Leone Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to China was US$23.16 Thousand during 2017, according to the United Nations COMTRADE database on international trade. Sierra Leone Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to China - data, historical chart and statistics - was last updated on May of 2024.