Nigeria Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to China was US$9.9 Thousand during 2012, according to the United Nations COMTRADE database on international trade. Nigeria Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to China - data, historical chart and statistics - was last updated on May of 2024.