produced coal
51coal gas — /ˈkoʊl gæs/ (say kohl gas) noun 1. the gas formed by heating coal. 2. a gas used for illuminating and heating, produced by distilling bituminous coal, and consisting chiefly of hydrogen, methane, and carbon monoxide …
52coal oil — Kerosene Ker o*sene , n. [Gr. ? wax.] An oil used for illuminating purposes, formerly obtained from the distillation of mineral wax, bituminous shale, etc., and hence called also {coal oil}. It is now produced in immense quantities, chiefly by… …
53coal oil — n. petroleum produced by the dry distillation of bituminous coal; kerosene …
54Coal-producing regions — A geographic classification of areas where coal is produced. Appalachian Region: Consists of Alabama, Eastern Kentucky, Maryland, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia. Northern Appalachian Region: Consists of Maryland …
55coal tar — noun a thick black liquid produced by distilling bituminous coal, containing organic chemicals including benzene, naphthalene, phenols, and aniline …
56coal gas — noun (U) gas produced by burning coal, used especially for electricity and heating compare natural gas …
57Captive coal — Coal produced to satisfy the needs of the mine owner, or of a parent, subsidiary, or other affiliate of the mine owner (for example, steel companies and electricity generators), rather than for open market sale. U.S. Dept. of Energy, Energy… …
58Environmental effects of coal — There are a number of adverse environmental effects of coal mining and burning.These effects include: * release of carbon dioxide and methane, both of which are greenhouse gases causing climate change and global warming according to the IPCC.… …
59History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… …
60Underground coal gasification — (UCG) is an in situ gasification process carried out in non mined coal seams using injection and production wells drilled from the surface, which enables the coal to be converted into product gas. The process is flexible in operation and is… …
