Mexico Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Guyana was US$491 during 2011, according to the United Nations COMTRADE database on international trade. Mexico Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Guyana - data, historical chart and statistics - was last updated on May of 2024.