|
Table
1. Nonmining and mining industries with the largest numbers of U.S.
workers potentially exposed to respirable crystalline silica, 1986
|
SIC*
|
Industry |
Estimated
number of
workers potentially
exposed (1986)
|
%
total
workers exposed
(NOES)
|
Nonmining
industries:
|
174
|
Masonry,
stonework, tile setting, and plastering |
131,986
|
32.7
|
734
|
Services
to dwellings and other buildings |
65,812
|
10.3
|
327
|
Concrete,
gypsum, and plaster products |
63,456
|
33.3
|
176
|
Roofing
and sheet metal work |
51,153
|
25.3
|
356
|
General
industrial machinery and equipment |
44,991
|
16.2
|
807
|
Medical
and dental laboratories |
37,063
|
30.0
|
493
|
Combination
of gas and electric and other utilities |
35,074
|
21.2
|
179
|
Miscellaneous
special trade contractors |
32,615
|
7.8
|
753
|
Automotive
repair shops |
30,826
|
7.1
|
326
|
Pottery
and related products |
29,772
|
81.7
|
Mining
industries:
|
13
|
Oil
and gas extraction |
408,175
|
100
|
12
|
Bituminous
coal and lignite mining |
174,131
|
100
|
14
|
Mining
and quarrying of nonmetallic minerals, except fuels |
100,546
|
100
|
10
|
Metal
mining |
39,856
|
100
|
Source:
NIOSH [1991].
*Standard industrial classification.
Estimated number of workers potentially exposed to
the hazards of flint, quartz, sand, or silica powder; based on data
from the County Business Patterns 1986 [Bureau of the Census
1986] and the National Occupational Exposure Survey (NOES) [NIOSH
1983b]. For SICs in which the estimates differed for individual hazards,
the highest percentage was used for that SIC.
Exposure is assumed to be 100% in the mining industries. |
|