South Korea Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to United States was US$100 during 2016, according to the United Nations COMTRADE database on international trade. South Korea Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to United States - data, historical chart and statistics - was last updated on May of 2024.