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Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements , chiefly hydrogen , sulfur , oxygen , and nitrogen . [ 1 ]
Bituminous coal. Bituminous coal, or black coal, is a type of coal containing a tar-like substance called bitumen or asphalt. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams. It is typically hard but friable.
Other terms which refer to anthracite are black coal, hard coal, stone coal, [10] [11] dark coal, coffee coal, blind coal (in Scotland), [7] Kilkenny coal (in Ireland), [10] crow coal or craw coal, and black diamond. "Blue Coal" is the term for a once-popular and trademarked brand of anthracite, mined by the Glen Alden Coal Company in ...
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. [3] As a fossil fuel burned for heat, coal supplies about a quarter of the world's primary energy and two-fifths of its ...
Black Gold (Nina Simone album), 1970; Black Gold (Kutt Calhoun album), 2013; Black Gold: The Best of Soul Asylum; Black Gold: Best of Editors "Black Gold" (song), a 1993 song by Soul Asylum from Grave Dancer's Union "Black Gold", a 1997 song by Millencolin from For Monkeys "Black Gold", a 2005 song by Running Wild from Rogues en Vogue
West Virginia University law professor Pat McGinley, who was part of a state team investigating the 2010 Upper Big Branch mining disaster that killed 29 miners, called the resurgence of black lung ...
There’s a well-known but poorly understood investment that the head of the world’s largest asset manager, BlackRock CEO Larry Fink, thinks is an alternative to gold. Don't miss
Small coal at one time referred to charcoal, but this usage is obsolete. [31] Snap or bait. Snap, bait or piece is food taken to eat part way through the shift and often carried in a snap tin. [32] Sough. A sough is a drainage tunnel to take water from coal mines without the need to pump it to the surface. [1] An example is the Great Haigh ...