Estonia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Russia was US$46.67 Thousand during 2007, according to the United Nations COMTRADE database on international trade. Estonia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Russia - data, historical chart and statistics - was last updated on May of 2024.