Tj. Smith et al., Historical cohort study of US man-made vitreous fiber production workers: VII. Overview of the exposure assessment, J OCCUP ENV, 43(9), 2001, pp. 809-823
Citations number
28
Categorie Soggetti
Envirnomentale Medicine & Public Health
Journal title
JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE
Data and procedures used to reconstruct the history of exposures at each of
the 15 plants (19 distinct sites) are presented. The assessment consisted
of five steps: (1) develop a Technical History of operations, stable period
s, and time Points of changes relevant for exposures, and identify the pres
ence of potentially confounding co-exposures; (2) develop a set Of unique d
epartment-job names with descriptions and a job Dictionary for all verbatim
names in work histories; (3) collect all company and other exposure data (
>1600 observed), and develop quantitative fiber, formaldehyde, and silica e
xposure estimates; (4) integrate estimates with the Technical History to ma
ke Exposure Extrapolation Tables; and (5) use the the Tables with job data
to develop an Exposure Matrix for each plant. Nineteen Exposure Matrices we
re made, with 82 to 621 lines, covering up to 54 years of operations.