Zambia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Zimbabwe was US$17.96 Thousand during 2017, according to the United Nations COMTRADE database on international trade. Zambia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Zimbabwe - data, historical chart and statistics - was last updated on May of 2024.