Slovakia Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Hungary was US$2.44 Million during 2023, according to the United Nations COMTRADE database on international trade. Slovakia Exports of pebbles, gravel, flint, macadam of slag, tarred macadam to Hungary - data, historical chart and statistics - was last updated on May of 2024.