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'''Anthracite''' is the highest rank of [[coal]], and is typically used for residential and commercial space heating. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed [[carbon]] and a low percentage of volatile matter.
'''Anthracite''' is the highest rank of [[coal]], and is typically used for residential and commercial space heating. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed [[carbon]] and a low percentage of volatile matter.
The moisture content of fresh-mined anthracite generally is less than 15 percent. The heat content of anthracite ranges from 22 to 28 million Btu per ton on a moist, mineral-matter-free basis. The heat content of anthracite coal consumed in the United States averages 25 million Btu per ton, on the as-received basis (i.e., containing both inherent moisture and mineral matter).
The moisture content of fresh-mined anthracite generally is less than 15 percent. The heat content of anthracite ranges from 22 to 28 million BTU per ton on a moist, mineral-matter-free basis. The heat content of anthracite coal consumed in the United States averages 25 million BTU per ton, on the as-received basis (i.e., containing both inherent moisture and mineral matter).
Since the 1980s, anthracite refuse or mine waste has been used for steam electric power generation. This fuel typically has a heat content of 15 million Btu per ton or less.
Since the 1980s, anthracite refuse or mine waste has been used for steam electric power generation. This fuel typically has a heat content of 15 million BTU per ton or less.
==See also==
*[[Coal mining]]
==Further reading==
==Further reading==
* Chandler, Alfred. "Anthracite Coal and the Beginnings of the 'Industrial Revolution' in the United States," ''Business History Review'' 46 (1972): 141-181. [http://www.jstor.org/pss/3113503 in JSTOR]
* Chandler, Alfred. "Anthracite Coal and the Beginnings of the 'Industrial Revolution' in the United States," ''Business History Review'' 46 (1972): 141-181. [http://www.jstor.org/pss/3113503 in JSTOR]