In a mortality study of current and former workers at a continuous filament fibreglass manufacturing plant, standardized mortality ratios (SMRs) for white men were near or below unity for all causes of death and for all cancer mortality compared with national and local standards. The slight elevation in the SMR for lung cancer among these men was not significant. A case-control study based on 45 lung cancer cases showed that the lung cancer odds ratio among white men exposed to respirable glass fibres was below unity, as were those for exposure to asbestos, respirable silica, and other substances investigated. None of these exposures suggests an increase in lung cancer risk for this population.

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