United States Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Macau was US$28.65 Thousand during 2017, according to the United Nations COMTRADE database on international trade. United States Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Macau - data, historical chart and statistics - was last updated on May of 2024.