Black sugar
Black sugar is a form of crystalline precipitate or a particulate pollution by-product unique from creosote caused by the burning of low grade coal in the 1940–1960s. The outgas from burning coal would be a by-product (burning coal was used in residential forced hot air furnaces) for the heating of family housing. Black sugar was often found on porches and the cold ductwork and caused the high carbon, soot-loaded gas to precipitate on the floors and walls and crystallize. Outward appearance was that of very fine, shiny coal, but would not combust when exposed to flames. After a time, the crystalline material would become powdered, to the consistency of white cane sugar, but retain a fine, shiny, black texture, thus the name "black sugar". The material would often be cleaned from duct work
primaryTopic
Black sugar
Black sugar is a form of crystalline precipitate or a particulate pollution by-product unique from creosote caused by the burning of low grade coal in the 1940–1960s. The outgas from burning coal would be a by-product (burning coal was used in residential forced hot air furnaces) for the heating of family housing. Black sugar was often found on porches and the cold ductwork and caused the high carbon, soot-loaded gas to precipitate on the floors and walls and crystallize. Outward appearance was that of very fine, shiny coal, but would not combust when exposed to flames. After a time, the crystalline material would become powdered, to the consistency of white cane sugar, but retain a fine, shiny, black texture, thus the name "black sugar". The material would often be cleaned from duct work
has abstract
Black sugar is a form of cryst ...... he Ohio River near Pittsburgh.
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Wikipage page ID
29,150,149
Wikipage revision ID
722,540,134
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type
comment
Black sugar is a form of cryst ...... ten be cleaned from duct work
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label
Black sugar
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