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Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. [2] Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous ( Pennsylvanian ...
The History of coal mining goes back thousands of years, with early mines documented in ancient China, the Roman Empire and other early historical economies. It became important in the Industrial Revolution of the 19th and 20th centuries, when it was primarily used to power steam engines, heat buildings and generate electricity.
Coal tar and coal tar sludges are frequently denser than water and are present in the environment as a dense non-aqueous phase liquid. In the UK, a number of former gasworks sites have been redeveloped for residential and other uses (including the Millennium Dome), being seen as prime developable land within the confines of city boundaries.
Coal mining is the process of extracting coal from the ground or from a mine. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.
The Coal Industry: A Study in Social Control (1940) online; Powell, H. Benjamin. Philadelphia's First Fuel Crisis. Jacob Cist and the Developing Market for Pennsylvania Anthracite. The Pennsylvania State University Press, 1978. Rottenberg, Dan. In the Kingdom of Coal: An American Family and the Rock That Changed the World (2003), owners ...
In the 1990s, coal tar was discovered under wetland soil in Greenville, just outside Unity Park. Today, the state is preparing to clean it up through a multi-year excavation proposal.But ...
the rise of the "smoke nuisance" in the 1850s, brought about by the domestic and commercial use of coal, in many cities and metropolises; direct combustion of coal being a particularly notorious source of pollution; which the widespread use of gas could abate, especially with the commencement of using gas for purposes other than illuminating ...
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