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 SILICIC ACID, CALCIUM SALT
CAS # 10101-39-0
RTECS #  
Agent Code 83497

SPECIAL TRADE CONTRACTORS (SIC 17)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
573 DRYWALL INSTALLERS 1,119

575 ELECTRICIANS 80

SUBTOTAL 1,199

FOOD AND KINDRED PRODUCTS (SIC 20)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
783 WELDERS AND CUTTERS 18

SUBTOTAL 18

CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 462
41
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 72

SUBTOTAL 534
41
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
224 CHEMICAL TECHNICIANS 44

453 JANITORS AND CLEANERS 260

633 SUPERVISORS, PRODUCTION OCCUPATIONS 34

719 MOLDING AND CASTING MACHINE OPERATORS 1,040
757
728 SHAPING AND JOINING MACHINE OPERATORS 1,954
1,042
756 MIXING AND BLENDING MACHINE OPERATORS 233

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 34

779 MACHINE OPERATORS, NOT SPECIFIED 142
47
798 PRODUCTION SAMPLERS AND WEIGHERS 68

SUBTOTAL 3,809
1,846
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 1,140
248
756 MIXING AND BLENDING MACHINE OPERATORS 178

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 2,978
554
779 MACHINE OPERATORS, NOT SPECIFIED 6,048
843
SUBTOTAL 10,344
1,645
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 232

783 WELDERS AND CUTTERS 421

SUBTOTAL 653

ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
703 LATHE AND TURNING MACHINE SET-UP OPERATORS 65

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 49
16
719 MOLDING AND CASTING MACHINE OPERATORS 42
14
755 EXTRUDING AND FORMING MACHINE OPERATORS 739
369
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 25
2
779 MACHINE OPERATORS, NOT SPECIFIED 30
28
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 179
16
SUBTOTAL 1,129
445
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 190

596 SHEETMETAL DUCT INSTALLERS 395
17
653 SHEET METAL WORKERS 447
43
723 METAL PLATING MACHINE OPERATORS 60

SUBTOTAL 1,092
60
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 232
58
719 MOLDING AND CASTING MACHINE OPERATORS 1,958
873
SUBTOTAL 2,190
931
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
748 LAUNDERING AND DRY CLEANING MACHINE OPERATORS 792
522
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 105

SUBTOTAL 897
522
TOTAL 21,865 5,490
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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