ASTM D121-09a Standard Terminology of Coal and Coke. 2014.
high volatile A bituminous coal — n the rank of coal, within the bituminous class of the Classification D388, such that on the dry and mineral matter free basis, the volatile matter content of the coal is greater than 31 % (or the fixed carbon content is less than 69 %), and its… … Coke&Coal Terminology
high volatile B bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the moist, mineral matter free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 13 000 (30.24 Mj/kg) but … Coke&Coal Terminology
high volatile C bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the moist, mineral matter free basis, the gross calorific value of the coal in British thermal units per pound is equal to or greater than 11 500 (26.75 Mj/kg)… … Coke&Coal Terminology
low volatile bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the dry and mineral matter free basis, the volatile matter content of the coal is greater than 14 % but equal to or less than 22 % (or the fixed carbon content… … Coke&Coal Terminology
medium volatile bituminous coal — n the rank of coal, within the bituminous class of Classification D388, such that, on the dry and mineral matter free basis, the volatile matter content of the coal is greater than 22 % but equal to or less than 31 % (or the fixed carbon content… … Coke&Coal Terminology
rank — n of coal, a classification designation that indicates the degree of metamorphism, or progressive alteration, from lignite to anthracite. • anthracite anthracitic class bituminous class high volatile A bituminous coal high volatile B bituminous… … Coke&Coal Terminology
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
Fly ash — Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not… … Wikipedia
Virginian Railway — Infobox SG rail railroad name=Virginian Railway logo filename=Virginian Herald.svg logo size=150 old gauge= marks=VGN locale=Deepwater, West Virginia Norfolk, VA start year=1907 end year=1959 successor line=Norfolk and Western hq city=Norfolk,… … Wikipedia
History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… … Wikipedia
