Coal - Wikipedia
Coal is composed primarily of carbon, along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a fossil fuel that forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes.Coal market & pricing | World Coal Association,Coal market & pricing. Coal is a global industry, with coal mined commercially in over 50 countries and used in over 70. Coal is readily available from a wide varietyWarrior Met Coal,Warrior Met Coal is a leading producer and exporter of metallurgical coal for the global steel industry from underground mines located in Brookwood, Alabama, southwest of Birmingham and near Tuscaloosa. These underground coal mines are 1,400 to 2,100 feet underground, making them some of the deepest vertical shaft coal mines in North America.