Switzerland Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Estonia was US$32.88 Thousand during 2020, according to the United Nations COMTRADE database on international trade. Switzerland Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Estonia - data, historical chart and statistics - was last updated on May of 2024.