Egypt Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Bulgaria was US$2.09 Million during 2013, according to the United Nations COMTRADE database on international trade. Egypt Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Bulgaria - data, historical chart and statistics - was last updated on May of 2024.