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NIOSH (National Institute for Occupational Safety and Health) Testimony on Velsicol Chemical Co., Leptophos Before the Subcommittee on Agricultural Research and General Legislation, Senate Committee on Agriculture, Nutrition, and Forestry, by Bobby F. Craft, December 13, 1977.

PB90130642

Publication Date	1977
Page Count	8
Abstract	The testimony concerned experience of the National Institute for Occupational Safety and Health (NIOSH) in investigating leptophos (21609905), known by the trade name Phosvel. Potential problems among employees at the Velsicol Chemical Company in Bayport, Texas involved the manufacturing and packaging of leptophos. Reports of the chemical being neurotoxic to mammals and fowl were causing concern as applications were being made to increase its use in this country. A visit was made to this facility but no operations involving leptophos were witnessed. Two of the 26 workers NIOSH examined had evidence of mild neurological dysfunction; 12 cases of serious neurological disorders had been previously identified. An attempt was made to medically study all present and former employees. A substantial number of workers reported that they had experienced one or more symptoms usually associated with exposure to organophosphates at some time during the preceding 5 year period. Of 155 workers examined, 63 had abnormalities in one or more of the objective tests or examinations. Eleven of the 63 had abnormal neurological examinations. Most of these also had abnormalities in nerve function, psychological tests or performance tests. NIOSH concluded that a substantial number of workers had neurological, electromyographic, electroneurographic, and psychological performance abnormalities. Due to the presence of other neurotoxic agents it was not possible to clearly establish a causal association of these findings with exposure to leptophos.
Keywords	Occupational diseases Industrial medicine Insecticides Exposure Toxicity Risk Hazardous materials Industrial plants Toxic substances Occupational safety and health Leptophos Phosvel Testimony CAS 21609-90-5
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 41I - Job Environment 68G - Environmental Health & Safety
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Document Type	Technical Report
NTIS Issue Number	199006

NIOSH (National Institute for Occupational Safety and Health) Testimony on Velsicol Chemical Co., Leptophos Before the Subcommittee on Agricultural Research and General Legislation, Senate Committee on Agriculture, Nutrition, and Forestry, by Bobby F. Craft, December 13, 1977.

NIOSH (National Institute for Occupational Safety and Health) Testimony on Velsicol Chemical Co., Leptophos Before the Subcommittee on Agricultural Research and General Legislation, Senate Committee on Agriculture, Nutrition, and Forestry, by Bobby F. Craft, December 13, 1977.
PB90130642

Publication Date	1977
Page Count	8
Abstract	The testimony concerned experience of the National Institute for Occupational Safety and Health (NIOSH) in investigating leptophos (21609905), known by the trade name Phosvel. Potential problems among employees at the Velsicol Chemical Company in Bayport, Texas involved the manufacturing and packaging of leptophos. Reports of the chemical being neurotoxic to mammals and fowl were causing concern as applications were being made to increase its use in this country. A visit was made to this facility but no operations involving leptophos were witnessed. Two of the 26 workers NIOSH examined had evidence of mild neurological dysfunction; 12 cases of serious neurological disorders had been previously identified. An attempt was made to medically study all present and former employees. A substantial number of workers reported that they had experienced one or more symptoms usually associated with exposure to organophosphates at some time during the preceding 5 year period. Of 155 workers examined, 63 had abnormalities in one or more of the objective tests or examinations. Eleven of the 63 had abnormal neurological examinations. Most of these also had abnormalities in nerve function, psychological tests or performance tests. NIOSH concluded that a substantial number of workers had neurological, electromyographic, electroneurographic, and psychological performance abnormalities. Due to the presence of other neurotoxic agents it was not possible to clearly establish a causal association of these findings with exposure to leptophos.
Keywords	Occupational diseases Industrial medicine Insecticides Exposure Toxicity Risk Hazardous materials Industrial plants Toxic substances Occupational safety and health Leptophos Phosvel Testimony CAS 21609-90-5
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 41I - Job Environment 68G - Environmental Health & Safety
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH. Div. of Surveillance, Hazard Evaluations and Field Studies.
Document Type	Technical Report
NTIS Issue Number	199006