IARC MONOGRAPHS ON THE EVALUATION OF CARCINOGENIC ...

Table 4 (contd)
Country and year of
survey
No. of
plants
Job/task Duration of
samples
No. of
samples
Air concentration in personal
breathing zone (mg/m 3 )
Mean Range
USA 30 Spray-up/lay-up ≥ 60 min;
8-h TWA
computed
NR 256 c
21–511
1967–78 Gel coating 192 43–256
Winding 170 64–362
Sheet-moulding compound
production
170 43–341
Foaming 128 64–213
Mixing 107 9–341
Casting 85 21–192
Cut, press and weigh 64 21–341
Other jobs d
≤ 43 0–213
Reference
A.D. Little, Inc.
(1981)
GM, geometric mean; GSD, geometric standard deviation; NA, not applicable; NR, not reported; TWA, time-weighted average; concentrations
originally reported in ppm were converted to mg/m 3 for this table
a
Range of arithmetic means for different plants
b
Italian plants reported by Galassi et al. (1993) and Finland, Norway, Sweden and the United Kingdom
c
Typical level
d
Includes general and non-production, finish and assembly, store and ship, office and other, injection molding, field service, preform production
and pultrusion (a continuous process for producing composite materials of constant cross-sectional area)
450
IARC MONOGRAPHS VOLUME 82