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A grade between bituminous coal and anthracite was once known as "steam coal" as it was widely used as a fuel for steam locomotives. In this specialized use, it is sometimes known as "sea coal" in the United States. [72] Small "steam coal", also called dry small steam nuts (DSSN), was used as a fuel for domestic water heating.
Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond.It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon, with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [1]
Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that has a submetallic lustre. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.
Coal miners will be better protected from poisonous silica dust that has contributed to the premature deaths of thousands of mine workers from a respiratory ailment commonly known as black lung ...
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]
An estimated one in five tenured miners in Central Appalachia has black lung disease; one in 20 has the most disabling form of black lung. Miners are also being diagnosed at younger ages — some ...
The Black Diamond, a 1921 British novel by Francis Brett Young; Black Diamond: The Story of the Negro Baseball Leagues, a 1994 book by Patricia and Fredrick McKissack; Black Diamonds: The Aboriginal and Islander Sports Hall of Fame, a 1996 book, incorporating the first round of the Aboriginal and Islander Sports Hall of Fame project
The collapse of a coal mining plant in Eastern Kentucky Tuesday has left one worker dead. ... The No. 7 mine was under a strike when Black miners were brought in by the coal company to break it ...