Colombia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Oman was US$118.44 Thousand during 2021, according to the United Nations COMTRADE database on international trade. Colombia Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Oman - data, historical chart and statistics - was last updated on June of 2024.