Workplace Exposure to Asbestos:
Review and Recommendations
NON-OCCUPATIONAL EXPOSURE
TO COMMERCIAL SOURCES
OF ASBESTOS
Memorandum on Asbestos Update and Recommended
Occupational Standard
I. Asbestos Nomenclature/Definitions
II. Asbestos Sampling and Analysis
III. Biologic Effects of Exposure to
Asbestos in Animals
IV. Biologic Effects of Exposure to
Asbestos in Humans
V. Smoking and Asbestos
VI. Exposure to Asbestiform Minerals
other than Commerically Mined Asbestos
VII. Non-Occupational Exposure to Commerical
Sources of Asbestos
VIII. Dose-Response Relationships
References
Anderson et al.. (1979) reported on the occurrence of X-ray abnormalities
among household contacts of workers in an amosite asbestos factory. The
study cohort consisted of 679 household contacts who had lived in the
household of an actively employed amosite asbestos factory worker and
who themselves had not had occupational exposure to asbestos or other
fibrogenic dust. These individuals were given a PA chest film which was
read by five readers according to the ILO/UC Classification of 1971. For
comparison, 325 controls living in the same community as the study subjects,
matched by age and sex, were examined.
Among the study population, there was a 17% prevalence of small opacities,
versus 3% for the controls. Pleural calcifications were present in 8%
of the household contacts and were seen in none of the controls. There
were 35% with one or more radiological abnormalities among household contacts
in contrast to 5% among controls. An increasing prevalence of all abnormalities
with duration of exposure was observed.
Churg et al. (1978) reported a case of mesothelioma of the pericardium
in a man treated 15 years earlier for angina pectoris by dusting of the
pericardial cavity with a mixture of fibrous dusts including anthophyllite
asbestos, tremolite asbestos, and fibrous glass.
Memorandum on Asbestos Update and Recommended
Occupational Standard
I. Asbestos Nomenclature/Definitions
II. Asbestos Sampling and Analysis
III. Biologic Effects of Exposure to
Asbestos in Animals
IV. Biologic Effects of Exposure to
Asbestos in Humans
V. Smoking and Asbestos
VI. Exposure to Asbestiform Minerals
other than Commerically Mined Asbestos
VII. Non-Occupational Exposure to Commerical
Sources of Asbestos
VIII. Dose-Response Relationships
References
|
