Spain Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Iceland was US$3.51 Thousand during 2007, according to the United Nations COMTRADE database on international trade. Spain Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Iceland - data, historical chart and statistics - was last updated on May of 2024.