Morbidity and mortality of vermiculite miners and millers exposed to tremolite-actinolite: Part III. Radiographic findings

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Am. J. Ind. Med.; (United States)

DOI:https://doi.org/10.1002/ajim.4700110104· OSTI ID:6934785

Amandus, H E; Althouse, R; Morgan, W K; Sargent, E N; Jones, R

A study was conducted to estimate the exposure-response relationship for tremolite-actinolite fiber exposure and radiographic findings among 184 men employed at a Montana vermiculite mine and mill. Workers were included if they had been employed during 1975-1982 and had achieved at least 5 years tenure at the Montana site. Past fiber exposure was associated with an increased prevalence of parenchymal and pleural radiographic abnormalities. Smoking was not significantly related to the prevalence of small opacities. However, the number of workers who had never smoked was small, and this prevented measurement of the smoking effect. Under control for smoking and age, the prevalence of small opacities was significantly greater for vermiculite workers with greater than 100 fiber/cc-years exposure than for comparison groups (cement workers, blue collar workers, and coal miners) who had no known occupational fiber exposure. A logistic model predicted an increase of 1.3% in the odds ratio for small opacities at an additional exposure of 5 fiber-years.

• Research Organization: National Institute for Occupational Safety and Health, Morgantown, WV
• OSTI ID: 6934785
• Journal Information: Am. J. Ind. Med.; (United States), Journal Name: Am. J. Ind. Med.; (United States) Vol. 1; ISSN AJIMD
• Country of Publication: United States
• Language: English

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ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
BIOMEDICAL RADIOGRAPHY
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MAGNESIUM SILICATES
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MILLING
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SILICIC ACID
SILICON COMPOUNDS
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VERMICULITE