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simple.wikipedia.org/wiki/Coal

Coal is a flammable black hard rock used as a solid fossil fuel. It is mainly made up of 65-95% carbon and also contains hydrogen, sulphur, oxygen and nitrogen  ...

en.wikipedia.org/wiki/Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata ..... The United States Energy Information Administration estimates coal reserves at 7011948000000000000♤948×109 short tons (860 Gt) .

www.encyclopedia.com/earth-and-environment/minerals-mining-and-metallurgy/mineralogy-and-crystallography/coal

Get information, facts, and pictures about coal at Encyclopedia.com. Make research projects and school reports about coal easy with credible articles from our ...

www.iea.org/statistics/relateddatabases/coalinformation

The Coal Information 2017 data service contains comprehensive statistics on OECD coal production, supply, consumption and balances. It also includes, for ...

www.iea.org/publications/freepublications/publication/coal-information---2017-edition---overview.html

Coal Information 2017 provides a comprehensive review of historical and current market trends in the world coal sector, including 2016 provisional data.

www.eia.gov/energyexplained/index.cfm?page=coal_home

Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy ...

www.eia.gov/energyexplained/index.cfm?page=coal_use

May 30, 2017 ... Coal was the source of about 15% of total U.S. energy consumption in 2016. The electric power sector accounted for about 91% of total U.S. ...

www.eia.gov/coal

Energy Information Administration - EIA - Official Energy Statistics from the U.S. ... Natural gas-fired electricity conversion efficiency grows as coal remains stable.

www.oecd.org/publications/coal-information-16834275.htm

Sep 2, 2016 ... Coal Information provides a comprehensive review of historical and current market trends in the world coal sector, including 2015 provisional ...