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#= 344952)
CAS # 1344-95-2
RTECS #  
Agent Code X1322

OIL AND GAS EXTRACTION (SIC 13)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
617 MINING OCCUPATIONS, N.E.C. 159

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 119

869 CONSTRUCTION LABORERS 795

SUBTOTAL 1,073

GENERAL BUILDING CONTRACTORS (SIC 15)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
593 INSULATION WORKERS 5,971

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 319

869 CONSTRUCTION LABORERS 6,601
227
SUBTOTAL 12,891
227
SPECIAL TRADE CONTRACTORS (SIC 17)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 1,042

565 TILE SETTERS, HARD AND SOFT 7,049

566 CARPET INSTALLERS 1,658

593 INSULATION WORKERS 1,107

SUBTOTAL 10,856

FOOD AND KINDRED PRODUCTS (SIC 20)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 352

453 JANITORS AND CLEANERS 927

696 STATIONARY ENGINEERS 95

756 MIXING AND BLENDING MACHINE OPERATORS 117

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 585

877 STOCK HANDLERS AND BAGGERS 469

889 LABORERS, EXCEPT CONSTRUCTION 1,540
1,232
SUBTOTAL 4,085
1,232
APPAREL AND OTHER TEXTILE PRODUCTS (SIC 23)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 214
80
SUBTOTAL 214
80
LUMBER AND WOOD PRODUCTS (SIC 24)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
783 WELDERS AND CUTTERS 381

SUBTOTAL 381

PAPER AND ALLIED PRODUCTS (SIC 26)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
734 PRINTING MACHINE OPERATORS 600

SUBTOTAL 600

PRINTING AND PUBLISHING (SIC 27)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 669

734 PRINTING MACHINE OPERATORS 3,232
95
878 MACHINE FEEDERS AND OFFBEARERS 438

SUBTOTAL 4,339
95
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 103
52
389 ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C. 52

453 JANITORS AND CLEANERS 720
41
593 INSULATION WORKERS 228

756 MIXING AND BLENDING MACHINE OPERATORS 64

757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 72

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 366

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 310

SUBTOTAL 1,915
93
PETROLEUM AND COAL PRODUCTS (SIC 29)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
567 CARPENTERS 14

593 INSULATION WORKERS 409

SUBTOTAL 423

RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
027 PERSONNEL, TRAINING, AND LABOR RELATIONS SPECIALISTS 50

216 ENGINEERING TECHNICIANS, N.E.C. 272
136
235 TECHNICIANS, N.E.C. 100
25
453 JANITORS AND CLEANERS 560

719 MOLDING AND CASTING MACHINE OPERATORS 3,277
1,661
728 SHAPING AND JOINING MACHINE OPERATORS 1,954
1,042
749 MISCELLANEOUS TEXTILE MACHINE OPERATORS 827
79
755 EXTRUDING AND FORMING MACHINE OPERATORS 2,939
1,513
756 MIXING AND BLENDING MACHINE OPERATORS 1,972
400
769 SLICING AND CUTTING MACHINE OPERATORS 554
58
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 3,157
302
785 ASSEMBLERS 1,359
29
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 288
29
SUBTOTAL 17,309
5,274
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
779 MACHINE OPERATORS, NOT SPECIFIED 316

783 WELDERS AND CUTTERS 164

SUBTOTAL 480

PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
518 INDUSTRIAL MACHINERY REPAIRERS 97

563 BRICKMASONS AND STONEMASONS 43

633 SUPERVISORS, PRODUCTION OCCUPATIONS 71

675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 503

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 1,089

724 HEAT TREATING EQUIPMENT OPERATORS 1,510

768 CRUSHING AND GRINDING MACHINE OPERATORS 173

849 CRANE AND TOWER OPERATORS 56

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 106

889 LABORERS, EXCEPT CONSTRUCTION 712

SUBTOTAL 4,360

FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
073 CHEMISTS, EXCEPT BIOCHEMISTS 26

216 ENGINEERING TECHNICIANS, N.E.C. 78

453 JANITORS AND CLEANERS 1,055

633 SUPERVISORS, PRODUCTION OCCUPATIONS 51

675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 156

696 STATIONARY ENGINEERS 7

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 1,093
39
719 MOLDING AND CASTING MACHINE OPERATORS 442
52
723 METAL PLATING MACHINE OPERATORS 152

755 EXTRUDING AND FORMING MACHINE OPERATORS 26

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 182

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 130

779 MACHINE OPERATORS, NOT SPECIFIED 93
37
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 78

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 78

887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 541

SUBTOTAL 4,188
128
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
073 CHEMISTS, EXCEPT BIOCHEMISTS 96
32
365 STOCK AND INVENTORY CLERKS 6

453 JANITORS AND CLEANERS 1,360
80
518 INDUSTRIAL MACHINERY REPAIRERS 634

675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 15

703 LATHE AND TURNING MACHINE SET-UP OPERATORS 77

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 45

725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 176
128
734 PRINTING MACHINE OPERATORS 5

756 MIXING AND BLENDING MACHINE OPERATORS 87
27
758 COMPRESSING AND COMPACTING MACHINE OPERATORS 464
77
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 648
54
783 WELDERS AND CUTTERS 191

785 ASSEMBLERS 554
21
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 257

797 PRODUCTION TESTERS 135

856 INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS 193

SUBTOTAL 4,943
419
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 2

585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 2

633 SUPERVISORS, PRODUCTION OCCUPATIONS 33

719 MOLDING AND CASTING MACHINE OPERATORS 32
7
723 METAL PLATING MACHINE OPERATORS 45

724 HEAT TREATING EQUIPMENT OPERATORS 101

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 61
30
SUBTOTAL 276
37
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
235 TECHNICIANS, N.E.C. 26

365 STOCK AND INVENTORY CLERKS 38

567 CARPENTERS 237
14
585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 1,257

593 INSULATION WORKERS 400

637 MACHINISTS 182
7
643 BOILERMAKERS 48

768 CRUSHING AND GRINDING MACHINE OPERATORS 62

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 17

796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 23

SUBTOTAL 2,290
21
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 6

SUBTOTAL 6

MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
518 INDUSTRIAL MACHINERY REPAIRERS 268

SUBTOTAL 268

LOCAL AND INTERURBAN PASSENGER TRANSIT (SIC 41)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
365 STOCK AND INVENTORY CLERKS 57

SUBTOTAL 57

TRANSPORTATION BY AIR (SIC 45)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
508 AIRCRAFT ENGINE MECHANICS 6,821
57
515 AIRCRAFT MECHANICS, EXC. ENGINE 176
9
689 INSPECTORS, TESTERS, AND GRADERS 168

SUBTOTAL 7,165
66
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
549 NOT SPECIFIED MECHANICS AND REPAIRERS 1,401

SUBTOTAL 1,401

PERSONAL SERVICES (SIC 72)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 233

748 LAUNDERING AND DRY CLEANING MACHINE OPERATORS 5,991
4,668
779 MACHINE OPERATORS, NOT SPECIFIED 2,566
1,711
SUBTOTAL 8,790
6,379
BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
376 INVESTIGATORS AND ADJUSTERS, EXCEPT INSURANCE 4,989

453 JANITORS AND CLEANERS 48

455 PEST CONTROL OCCUPATIONS 4,321

754 PACKAGING AND FILLING MACHINE OPERATORS 48

SUBTOTAL 9,406

AUTO REPAIR, SERVICES, AND GARAGES (SIC 75)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
549 NOT SPECIFIED MECHANICS AND REPAIRERS 1,532

SUBTOTAL 1,532

MISCELLANEOUS REPAIR SERVICES (SIC 76)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 1,086

889 LABORERS, EXCEPT CONSTRUCTION 72

SUBTOTAL 1,158

HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
105 THERAPISTS, N.E.C. 219
219
448 SUPERVISORS, CLEANING AND BUILDING SERVICE WORKERS 21
14
449 MAIDS AND HOUSEMEN 1,372
1,029
486 GROUNDSKEEPERS AND GARDENERS, EXCEPT FARM 41
14
643 BOILERMAKERS 141

734 PRINTING MACHINE OPERATORS 32
8
748 LAUNDERING AND DRY CLEANING MACHINE OPERATORS 1,615
1,260
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 21

SUBTOTAL 3,462
2,544
TOTAL 103,868 16,595
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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