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There was no indication of a positive association between occupational exposure and death from all causes, all cancers, lung cancers, non-malignant respiratory disease, or all heart disease.

The mortality rates are comparable with the general US population. Increasing SMRs with length of plant operation is indicative of waning healthy worker effect with time since first employment. The results are comparable with other titanium dioxide cohort studies.

Supplemental Table 1. Estimated cumulative lung dose (mGy and weighted-mGy) based on different assumptions of the four parameters used in the dose reconstruction process: AMAD, breathing rate, daily exposure time and uranium solubility. Computations made for the 26,650 workers employed 1943-1947 for at least 90 days and followed through 2019 for the 13,951 female and through 2018 for the 12,699 male workers.