Philippines Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Liberia was US$20.93 Thousand during 2012, according to the United Nations COMTRADE database on international trade. Philippines Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Liberia - data, historical chart and statistics - was last updated on May of 2024.