Public health risks of the dioxins. Lowrance WW, ed. New York: Rockefeller University, 1984 Jan; :361-366
The NIOSH occupational dioxin registry is described. The registry is a compilation of demographic and occupational history information for all United States production workers who have synthesized products known to be contaminated with 2,3,7,8-tetrachlorodibenzo-p- dioxin (1746016) (TCDD) or hexachlorinated dibenzo-p-dioxins. There are currently 12 production facilities and about 6000 workers in the registry. The requirement for being included in the registry is a company record of assignment to a department which manufactures products potentially contaminated with TCDD or hexachlorinated dioxins. Chemical products relevant to the registry are listed. Trichlorophenol, the herbicides 2,4,5-trichlorophenoxyacetic-acid and silvex, and hexachlorophene are manufactured products that may be contaminated with TCDD. Pentachlorophenol is contaminated with hexa, hepta, and octachlorinated dioxins, but not TCDD. Future activities of the dioxin registry include conducting a mortality study of exposed workers, for which the comparison group is the United States male population. The study will evaluate the causes of death in workers exposed to products containing dioxins. The four carcinogenic outcomes which have been suggested in animal and human studies, soft tissue sarcoma, lymphoma, stomach cancer, and liver cancer, will receive special emphasis.