Mortality study of workers employed at a plant manufacturing chemicals for the rubber industry: 1955-86.

ion had been thorough, but a review of all original records was necessary to obtain further identifying particulars for tracing the study popula tion (full names rather than initials, and addresses that were not available in the computerised data). Several sources were used for tracing and vital sta tus for some 98% of the cohort was determined (see table 1). Cause of death was ascertained for some 98% of the identified deaths. Job histories were available in terms of some 300 job and department titles. A former occupational hygienist from the plant provided assessments of eight hour time weighted average exposures to both MBT and MBT derivatives for different years and for each job and department title. Jobs attracted either zero exposure, very low (0-1 mg/m3), low This content downloaded from 157.55.39.238 on Sat, 02 Jul 2016 05:25:12 UTC All use subject to http://about.jstor.org/terms Mortality study of workers employed at a plant manufacturing chemicals for the rubber industry: 1955-86 999 Table 1 Vital status at closing date of study (31 December 1986)