Spain Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Guinea was US$364.68 Thousand during 2018, according to the United Nations COMTRADE database on international trade. Spain Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Guinea - data, historical chart and statistics - was last updated on May of 2024.