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Breathing in coal dust causes coalworker's pneumoconiosis or "black lung", so called because the coal dust literally turns the lungs black. [137] In the US alone, it is estimated that 1,500 former employees of the coal industry die every year from the effects of breathing in coal mine dust. [138]
An anthracite pile in Trevorton, Pennsylvania. Anthracite derives from the Greek anthrakítēs (ἀνθρακίτης), literally "coal-like". [9] 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.
Bituminous coal is dark brown to black, [3] hard, [9] but friable. [10] It is commonly composed of thin bands of alternating bright and dull material. [9] Though bituminous coal varies in its chemical composition, a typical composition is about 84.4% carbon, 5.4% hydrogen, 6.7% oxygen, 1.7% nitrogen, and 1.8% sulfur, on a weight basis. [11]
Small coals may be produced accidentally by breakage, and sometimes deliberately as a by-product of screening out the more valuable round coals. Small coal at one time referred to charcoal, but this usage is obsolete.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
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
Here’s why humans are taking bovine colostrum supplements and what research shows about the benefits and risks. Why a ‘liquid gold’ substance for cows is making waves with humans Skip to ...
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
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.