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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 online data service includes annual data from 1960 to 2015. The World supply and consumption file contains data up to 2014.

www.worldcoal.org

Welcome to World Coal Association, where you'll find information about coal, the environment, sustainable development, coal industry news, global coal facts ...

www.eia.gov/energyexplained/index.cfm/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.sciencekids.co.nz/sciencefacts/chemistry/coal.html

Read on for some amazing facts and information about coal consumption, coal production, ... Coal is made largely of carbon but also features other elements such as ... While most forms of coal are associated with sedimentary rock, anthracite ...

mineralseducationcoalition.org/minerals-database/coal

Coal is used to produce nearly half of all the electrical energy that is generated and used in the Unit. ... Home Mining & Minerals Information Minerals Database.

www.oecd-ilibrary.org/energy/coal-information_16834275

Sep 2, 2016 ... Coal Information brings together in one annual volume essential statistics on coal . It therefore provides a strong foundation for policy and ...

www.oecd-ilibrary.org/energy/data/iea-coal-information-statistics_coal-data-en

The Coal Information database contains comprehensive data on world coal markets, including price, production, trade and consumption.

www.stovesonline.co.uk/how-coal-formed.html

Coal is a black or brownish black combustible mineral formed about 300 million years ago when the earth was covered by swampy forests of scale tress ...