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Industrial fluoride pollution: chronic fluoride poisoning in Cornwall Island cattle

Journal Article · · Cornell Vet.; (United States)
OSTI ID:6289800
An aluminum plant on the south bank of the St. Lawrence River, southwest of Cornwall Island, Ontario, Canada, has emitted 0.816 metric tons of fluoride daily since 1973. Considerably higher amounts were emitted from 1959 to 1973. The plant was designated as the major source of fluoride emissions impacting on Cornwall Island. Cattle located on this island showed signs of chronic fluoride poisoning. This poisoning was manifested clinically by stunted growth and dental fluorosis to a degree of severe interference with drinking and mastication. This Cornwall Island herds study indicates that the established tolerance level of fluoride for performance of dairy and beef cattle is not valid since the tolerance level was set based on experiments with healthy calves which were exposed to dietary fluoride from 3 to 4 months of age and not on cattle which were chronically exposed to fluoride from conception to death. 56 references.
Research Organization:
Cornell Univ., Ithaca, NY
OSTI ID:
6289800
Journal Information:
Cornell Vet.; (United States), Journal Name: Cornell Vet.; (United States) Vol. 69; ISSN COVEA
Country of Publication:
United States
Language:
English