Namibia Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to United States was US$27 during 2023, according to the United Nations COMTRADE database on international trade. Namibia Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to United States - data, historical chart and statistics - was last updated on May of 2024.