Mineral industry of Colombia - Wikipedia
Colombia's coal output has increased consistently from 4 million tons in 1981 to 65.6 million tons in 2006, when it contributed 1.4 percent of the world's coal production. In 2006 Colombia accounted for 81 percent of the total coal production in Central and South America. Furthermore, 94 percent of Colombia's coal is of very good quality and is classified as hard, with high heat-generating ...