Switzerland Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Uruguay was US$5.71 Thousand during 2018, according to the United Nations COMTRADE database on international trade. Switzerland Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Uruguay - data, historical chart and statistics - was last updated on May of 2024.