Greece Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Montenegro was US$2.54 Thousand during 2018, according to the United Nations COMTRADE database on international trade. Greece Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Montenegro - data, historical chart and statistics - was last updated on May of 2024.