National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by 2-Digit Standard Industrial Classification (SIC)*

Agent Name SILICA, AMORPHOUS
CAS #
RTECS #
Agent Code X6493

SIC Industry Description (1972) Total # Employees
(Male & Female)
Total # Female
Employees
07 AGRICULTURAL SERVICES 743 743
13 OIL AND GAS EXTRACTION 12,360  
15 GENERAL BUILDING CONTRACTORS 17,272 1,196
16 HEAVY CONSTRUCTION CONTRACTORS 5,413 5,371
17 SPECIAL TRADE CONTRACTORS 70,794 159
20 FOOD AND KINDRED PRODUCTS 5,643 2,437
22 TEXTILE MILL PRODUCTS 16,945 5,653
23 APPAREL AND OTHER TEXTILE PRODUCTS 27,577 25,484
24 LUMBER AND WOOD PRODUCTS 5,287 849
25 FURNITURE AND FIXTURES 4,966 766
26 PAPER AND ALLIED PRODUCTS 18,056 905
27 PRINTING AND PUBLISHING 45,993 7,535
28 CHEMICALS AND ALLIED PRODUCTS 27,953 5,015
29 PETROLEUM AND COAL PRODUCTS 500  
30 RUBBER AND MISC. PLASTICS PRODUCTS 47,376 19,344
31 LEATHER AND LEATHER PRODUCTS 1,945 1,373
32 STONE, CLAY, AND GLASS PRODUCTS 9,015 245
33 PRIMARY METAL INDUSTRIES 5,072  
34 FABRICATED METAL PRODUCTS 17,126 1,592
35 MACHINERY, EXCEPT ELECTRICAL 27,110 4,282
36 ELECTRIC AND ELECTRONIC EQUIPMENT 16,178 7,596
37 TRANSPORTATION EQUIPMENT 32,009 4,398
38 INSTRUMENTS AND RELATED PRODUCTS 5,971 3,450
39 MISCELLANEOUS MANUFACTURING INDUSTRIES 7,218 3,340
41 LOCAL AND INTERURBAN PASSENGER TRANSIT 4,759 862
42 TRUCKING AND WAREHOUSING 13,274 9,925
44 WATER TRANSPORTATION 6,479  
45 TRANSPORTATION BY AIR 5,307 236
48 COMMUNICATION 16,062 9,586
49 ELECTRIC, GAS, AND SANITARY SERVICES 6,710 1,012
50 WHOLESALE TRADE - DURABLE GOODS 12,445 1,673
51 WHOLESALE TRADE - NONDURABLE GOODS 398  
55 AUTOMOTIVE DEALERS & SERVICE STATIONS 4,025  
72 PERSONAL SERVICES 5,057 3,944
73 BUSINESS SERVICES 5,433 2,454
75 AUTO REPAIR, SERVICES, AND GARAGES 12,577  
76 MISCELLANEOUS REPAIR SERVICES 3,691  
80 HEALTH SERVICES 5,810 1,573
84 MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS 1,643 164
TOTAL 532,187 133,161

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.

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