National Occupational Exposure Survey
(1981 - 1983)

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

Agent Name SILICON CARBIDE, POWDER
CAS # 409-21-2
RTECS # VW0450000 
Agent Code X6494

TEXTILE MILL PRODUCTS (SIC 22)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 51

SUBTOTAL 51

PAPER AND ALLIED PRODUCTS (SIC 26)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 55

SUBTOTAL 55

CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
518 INDUSTRIAL MACHINERY REPAIRERS 10

585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 341
3
637 MACHINISTS 138

783 WELDERS AND CUTTERS 222

SUBTOTAL 711
3
PETROLEUM AND COAL PRODUCTS (SIC 29)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
224 CHEMICAL TECHNICIANS 351

699 MISCELLANEOUS PLANT AND SYSTEM OPERATORS 703

SUBTOTAL 1,054

PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 126

645 PATTERNMAKERS AND MODEL MAKERS, METAL 78

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 29

SUBTOTAL 233

FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
637 MACHINISTS 289

644 PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS 27

707 ROLLING MACHINE OPERATORS 1,373

SUBTOTAL 1,689

MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
518 INDUSTRIAL MACHINERY REPAIRERS 1,612

634 TOOL AND DIE MAKERS 3,115
21
635 TOOL AND DIE MAKER APPRENTICES 584

637 MACHINISTS 491

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 605

779 MACHINE OPERATORS, NOT SPECIFIED 544

SUBTOTAL 6,951
21
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
637 MACHINISTS 2,578
661
644 PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS 5

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 2

SUBTOTAL 2,585
661
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
365 STOCK AND INVENTORY CLERKS 276

684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 17

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 734

SUBTOTAL 1,027

INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
637 MACHINISTS 98
25
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 218

706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 129
40
719 MOLDING AND CASTING MACHINE OPERATORS 139

769 SLICING AND CUTTING MACHINE OPERATORS 159

SUBTOTAL 743
65
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
259 SALES REPRESENTATIVES, MINING, MANUFACTURING, AND WHOLESALE 1,649
733
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 366

647 PRECIOUS STONES AND METALS WORKERS (JEWELERS) 183

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 183

SUBTOTAL 2,381
733
TOTAL 17,480 1,483
RELATED PAGES: Estimates by SIC, Estimates by Occupation

*(1) The estimates for each occupation apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC where the agent was observed. Not all SICs were surveyed, and not all agents were observed in all surveyed SICs. (2) When using the estimates, standard errors associated with estimates should be considered. (3) 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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