Guyana Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Venezuela was US$9 during 2015, according to the United Nations COMTRADE database on international trade. Guyana Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Venezuela - data, historical chart and statistics - was last updated on May of 2024.