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 METHYLENE BISPHENYL ISOCYANATE
CAS # 101-68-8
RTECS # NQ9350000 
Agent Code 27780

AGRICULTURAL SERVICES (SIC 07)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
086 VETERINARIANS 1,472
294
SUBTOTAL 1,472
294
SPECIAL TRADE CONTRACTORS (SIC 17)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
565 TILE SETTERS, HARD AND SOFT 5,655

593 INSULATION WORKERS 633

595 ROOFERS 7,117

SUBTOTAL 13,405

TEXTILE MILL PRODUCTS (SIC 22)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
744 TEXTILE SEWING MACHINE OPERATORS 1,626
817
SUBTOTAL 1,626
817
LUMBER AND WOOD PRODUCTS (SIC 24)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
727 SAWING MACHINE OPERATORS 104
14
SUBTOTAL 104
14
PRINTING AND PUBLISHING (SIC 27)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
736 TYPESETTERS AND COMPOSITORS 1,550
1,292
774 PHOTOGRAPHIC PROCESS MACHINE OPERATORS 258

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 9
4
SUBTOTAL 1,817
1,296
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
235 TECHNICIANS, N.E.C. 76

357 MESSENGERS 278

453 JANITORS AND CLEANERS 433

519 MACHINERY MAINTENANCE OCCUPATIONS 271

575 ELECTRICIANS 338

585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 433

653 SHEET METAL WORKERS 88

753 CEMENTING AND GLUING MACHINE OPERATORS 616

756 MIXING AND BLENDING MACHINE OPERATORS 271

758 COMPRESSING AND COMPACTING MACHINE OPERATORS 16

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 183

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 1,362
51
779 MACHINE OPERATORS, NOT SPECIFIED 1,396
495
783 WELDERS AND CUTTERS 102

785 ASSEMBLERS 280
224
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 153
51
SUBTOTAL 6,296
821
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
756 MIXING AND BLENDING MACHINE OPERATORS 183
183
SUBTOTAL 183
183
PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
756 MIXING AND BLENDING MACHINE OPERATORS 92

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 2,843

SUBTOTAL 2,935

MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
235 TECHNICIANS, N.E.C. 124

676 PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS 123

733 MISCELLANEOUS WOODWORKING MACHINE OPERATORS 185

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 1,050

888 HAND PACKERS AND PACKAGERS 1,258
948
SUBTOTAL 2,740
948
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 7
7
453 JANITORS AND CLEANERS 142

719 MOLDING AND CASTING MACHINE OPERATORS 12
6
723 METAL PLATING MACHINE OPERATORS 1,320
81
725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 1,488
306
756 MIXING AND BLENDING MACHINE OPERATORS 6
6
779 MACHINE OPERATORS, NOT SPECIFIED 467

785 ASSEMBLERS 5,990
3,890
SUBTOTAL 9,432
4,296
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
044 AEROSPACE ENGINEERS 43

224 CHEMICAL TECHNICIANS 37

235 TECHNICIANS, N.E.C. 892
833
453 JANITORS AND CLEANERS 238

567 CARPENTERS 709
14
579 PAINTERS, CONSTRUCTION AND MAINTENANCE 186

634 TOOL AND DIE MAKERS 393

676 PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS 99

683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 337

703 LATHE AND TURNING MACHINE SET-UP OPERATORS 9

719 MOLDING AND CASTING MACHINE OPERATORS 7

725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 338
34
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 227

769 SLICING AND CUTTING MACHINE OPERATORS 14

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 2,496
873
785 ASSEMBLERS 194

789 HAND PAINTING, COATING, AND DECORATING OCCUPATIONS 374
187
797 PRODUCTION TESTERS 23

SUBTOTAL 6,616
1,941
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 661

216 ENGINEERING TECHNICIANS, N.E.C. 78
39
678 DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS 21

SUBTOTAL 760
39
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 147
65
SUBTOTAL 147
65
WATER TRANSPORTATION (SIC 44)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 1,708

SUBTOTAL 1,708

BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
224 CHEMICAL TECHNICIANS 977
154
453 JANITORS AND CLEANERS 48

785 ASSEMBLERS 624
384
SUBTOTAL 1,649
538
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
084 PHYSICIANS 137
26
095 REGISTERED NURSES 2,271
2,136
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 25
8
SUBTOTAL 2,433
2,170
TOTAL 53,323 13,422
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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