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 MORPHOLINE
CAS # 110-91-8
RTECS # QD6475000 
Agent Code 48910

OIL AND GAS EXTRACTION (SIC 13)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
617 MINING OCCUPATIONS, N.E.C. 795

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 159

SUBTOTAL 954

GENERAL BUILDING CONTRACTORS (SIC 15)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
588 CONCRETE AND TERRAZZO FINISHERS 444

869 CONSTRUCTION LABORERS 2,033

SUBTOTAL 2,477

SPECIAL TRADE CONTRACTORS (SIC 17)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 2,119

585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 629

SUBTOTAL 2,748

FOOD AND KINDRED PRODUCTS (SIC 20)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 811
62
505 AUTOMOBILE MECHANICS 733

549 NOT SPECIFIED MECHANICS AND REPAIRERS 680

643 BOILERMAKERS 54

694 WATER AND SEWAGE TREATMENT PLANT OPERATORS 26

696 STATIONARY ENGINEERS 290

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 198

SUBTOTAL 2,792
62
TOBACCO MANUFACTURES (SIC 21)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 52

SUBTOTAL 52

TEXTILE MILL PRODUCTS (SIC 22)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 1,072
132
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 26

SUBTOTAL 1,098
132
APPAREL AND OTHER TEXTILE PRODUCTS (SIC 23)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 502

518 INDUSTRIAL MACHINERY REPAIRERS 261

747 PRESSING MACHINE OPERATORS 5,878
5,803
SUBTOTAL 6,641
5,803
LUMBER AND WOOD PRODUCTS (SIC 24)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
216 ENGINEERING TECHNICIANS, N.E.C. 134
134
453 JANITORS AND CLEANERS 471

518 INDUSTRIAL MACHINERY REPAIRERS 90

544 MILLWRIGHTS 152

637 MACHINISTS 38

696 STATIONARY ENGINEERS 346

715 MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS 429

727 SAWING MACHINE OPERATORS 84

756 MIXING AND BLENDING MACHINE OPERATORS 132

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 635

785 ASSEMBLERS 1,843
658
856 INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS 13

SUBTOTAL 4,367
792
PAPER AND ALLIED PRODUCTS (SIC 26)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
216 ENGINEERING TECHNICIANS, N.E.C. 1,266

453 JANITORS AND CLEANERS 58

518 INDUSTRIAL MACHINERY REPAIRERS 410
22
549 NOT SPECIFIED MECHANICS AND REPAIRERS 1,194

633 SUPERVISORS, PRODUCTION OCCUPATIONS 321

705 MILLING AND PLANING MACHINE OPERATORS 1,923

749 MISCELLANEOUS TEXTILE MACHINE OPERATORS 2,550

756 MIXING AND BLENDING MACHINE OPERATORS 1,227

757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 32

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 36

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 533

769 SLICING AND CUTTING MACHINE OPERATORS 401

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 3,328
36
856 INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS 321

883 FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C. 134

SUBTOTAL 13,734
58
PRINTING AND PUBLISHING (SIC 27)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
194 ARTISTS, PERFORMERS, AND RELATED WORKERS, N.E.C. 291
143
453 JANITORS AND CLEANERS 1,483
157
518 INDUSTRIAL MACHINERY REPAIRERS 247
18
549 NOT SPECIFIED MECHANICS AND REPAIRERS 60

567 CARPENTERS 36

634 TOOL AND DIE MAKERS 161
49
649 ENGRAVERS, METAL 18

706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 67

734 PRINTING MACHINE OPERATORS 14,906
360
735 PHOTOENGRAVERS AND LITHOGRAPHERS 31
4
736 TYPESETTERS AND COMPOSITORS 258

737 MISCELLANEOUS PRINTING MACHINE OPERATORS 14

769 SLICING AND CUTTING MACHINE OPERATORS 67
18
774 PHOTOGRAPHIC PROCESS MACHINE OPERATORS 556
493
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 58
27
873 PRODUCTION HELPERS 1,695
363
SUBTOTAL 19,948
1,632
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
019 MANAGERS AND ADMINISTRATORS, N.E.C. 87
87
073 CHEMISTS, EXCEPT BIOCHEMISTS 619

224 CHEMICAL TECHNICIANS 496
93
225 SCIENCE TECHNICIANS, N.E.C. 158

453 JANITORS AND CLEANERS 576

487 ANIMAL CARETAKERS, EXCEPT FARM 100
67
516 HEAVY EQUIPMENT MECHANICS 33

633 SUPERVISORS, PRODUCTION OCCUPATIONS 13

696 STATIONARY ENGINEERS 94

699 MISCELLANEOUS PLANT AND SYSTEM OPERATORS 53

723 METAL PLATING MACHINE OPERATORS 367

756 MIXING AND BLENDING MACHINE OPERATORS 1,001

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 845
18
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 540
223
779 MACHINE OPERATORS, NOT SPECIFIED 106

785 ASSEMBLERS 1,053
1,053
873 PRODUCTION HELPERS 404

SUBTOTAL 6,545
1,541
PETROLEUM AND COAL PRODUCTS (SIC 29)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
505 AUTOMOBILE MECHANICS 63

518 INDUSTRIAL MACHINERY REPAIRERS 147

699 MISCELLANEOUS PLANT AND SYSTEM OPERATORS 42

757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 56

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 332

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 98
7
779 MACHINE OPERATORS, NOT SPECIFIED 5,593

889 LABORERS, EXCEPT CONSTRUCTION 147

SUBTOTAL 6,478
7
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 17

549 NOT SPECIFIED MECHANICS AND REPAIRERS 247

695 POWER PLANT OPERATORS 115
14
SUBTOTAL 379
14
LEATHER AND LEATHER PRODUCTS (SIC 31)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 377

669 SHOE REPAIRERS 65
65
745 SHOE MACHINE OPERATORS 560
66
756 MIXING AND BLENDING MACHINE OPERATORS 98

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 72

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 65

779 MACHINE OPERATORS, NOT SPECIFIED 739
129
795 MISCELLANEOUS HAND WORKING OCCUPATIONS 295

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 70

888 HAND PACKERS AND PACKAGERS 945
910
889 LABORERS, EXCEPT CONSTRUCTION 360

SUBTOTAL 3,646
1,170
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
216 ENGINEERING TECHNICIANS, N.E.C. 17
17
549 NOT SPECIFIED MECHANICS AND REPAIRERS 1,286

677 OPTICAL GOODS WORKERS 168
151
695 POWER PLANT OPERATORS 101
67
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 587
486
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 269

768 CRUSHING AND GRINDING MACHINE OPERATORS 67
67
779 MACHINE OPERATORS, NOT SPECIFIED 402
335
878 MACHINE FEEDERS AND OFFBEARERS 235
201
889 LABORERS, EXCEPT CONSTRUCTION 804

SUBTOTAL 3,936
1,324
PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 531

505 AUTOMOBILE MECHANICS 85

519 MACHINERY MAINTENANCE OCCUPATIONS 57

549 NOT SPECIFIED MECHANICS AND REPAIRERS 710
14
708 DRILLING AND BORING MACHINE OPERATORS 321
321
724 HEAT TREATING EQUIPMENT OPERATORS 1,510

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 252

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 271

SUBTOTAL 3,737
335
FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 84

507 BUS, TRUCK, AND STATIONARY ENGINE MECHANICS 197

519 MACHINERY MAINTENANCE OCCUPATIONS 46

637 MACHINISTS 196

705 MILLING AND PLANING MACHINE OPERATORS 163
7
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 2,823
1,186
724 HEAT TREATING EQUIPMENT OPERATORS 70

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 138

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 72

769 SLICING AND CUTTING MACHINE OPERATORS 26

779 MACHINE OPERATORS, NOT SPECIFIED 134
5
785 ASSEMBLERS 422
106
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 276

SUBTOTAL 4,647
1,304
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 438

534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 50

547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 40

549 NOT SPECIFIED MECHANICS AND REPAIRERS 427

634 TOOL AND DIE MAKERS 3,889

637 MACHINISTS 137

676 PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS 123

683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 1,660
677
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 8

695 POWER PLANT OPERATORS 282

704 LATHE AND TURNING MACHINE OPERATORS 8

705 MILLING AND PLANING MACHINE OPERATORS 8

706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 1,050
420
708 DRILLING AND BORING MACHINE OPERATORS 29

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 145

719 MOLDING AND CASTING MACHINE OPERATORS 34

724 HEAT TREATING EQUIPMENT OPERATORS 78

734 PRINTING MACHINE OPERATORS 503

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 3,705

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 210

779 MACHINE OPERATORS, NOT SPECIFIED 118

889 LABORERS, EXCEPT CONSTRUCTION 12

SUBTOTAL 12,954
1,097
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 141
72
365 STOCK AND INVENTORY CLERKS 1,359

374 MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C. 491

453 JANITORS AND CLEANERS 804

519 MACHINERY MAINTENANCE OCCUPATIONS 10

544 MILLWRIGHTS 168

549 NOT SPECIFIED MECHANICS AND REPAIRERS 394

637 MACHINISTS 1,514

683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 3,799
3,631
689 INSPECTORS, TESTERS, AND GRADERS 46
34
695 POWER PLANT OPERATORS 131

703 LATHE AND TURNING MACHINE SET-UP OPERATORS 321

706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 598
550
719 MOLDING AND CASTING MACHINE OPERATORS 990

723 METAL PLATING MACHINE OPERATORS 17
6
724 HEAT TREATING EQUIPMENT OPERATORS 81

734 PRINTING MACHINE OPERATORS 255
136
756 MIXING AND BLENDING MACHINE OPERATORS 14
3
758 COMPRESSING AND COMPACTING MACHINE OPERATORS 909
636
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 75

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 79

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 115
66
779 MACHINE OPERATORS, NOT SPECIFIED 3,583
2,715
784 SOLDERERS AND BRAZERS 78
17
785 ASSEMBLERS 15,083
10,764
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 246
83
856 INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS 287

SUBTOTAL 31,588
18,713
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
214 INDUSTRIAL ENGINEERING TECHNICIANS 14

235 TECHNICIANS, N.E.C. 50
14
579 PAINTERS, CONSTRUCTION AND MAINTENANCE 318
297
634 TOOL AND DIE MAKERS 393

637 MACHINISTS 28

676 PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS 96

695 POWER PLANT OPERATORS 222

696 STATIONARY ENGINEERS 30

708 DRILLING AND BORING MACHINE OPERATORS 9

753 CEMENTING AND GLUING MACHINE OPERATORS 646
530
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 17
3
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 3

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 53

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 9

785 ASSEMBLERS 985

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 44

887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 28

SUBTOTAL 2,945
844
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
235 TECHNICIANS, N.E.C. 307
15
505 AUTOMOBILE MECHANICS 11

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 88

787 HAND MOLDING, CASTING, AND FORMING OCCUPATIONS 219

SUBTOTAL 625
15
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 422

723 METAL PLATING MACHINE OPERATORS 191

734 PRINTING MACHINE OPERATORS 177

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 150

SUBTOTAL 940

RAILROAD TRANSPORTATION (SIC 40)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
516 HEAVY EQUIPMENT MECHANICS 436

696 STATIONARY ENGINEERS 240

SUBTOTAL 676

TRUCKING AND WAREHOUSING (SIC 42)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
549 NOT SPECIFIED MECHANICS AND REPAIRERS 339

658 FURNITURE AND WOOD FINISHERS 453

889 LABORERS, EXCEPT CONSTRUCTION 490
445
SUBTOTAL 1,282
445
TRANSPORTATION BY AIR (SIC 45)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
505 AUTOMOBILE MECHANICS 241

SUBTOTAL 241

COMMUNICATION (SIC 48)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 414
414
533 MISCELLANEOUS ELECTRICAL AND ELECTRONIC EQUIPMENT REPAIRERS 264

SUBTOTAL 678
414
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 433
173
453 JANITORS AND CLEANERS 429
86
575 ELECTRICIANS 343

SUBTOTAL 1,205
259
WHOLESALE TRADE - DURABLE GOODS (SIC 50)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 206

549 NOT SPECIFIED MECHANICS AND REPAIRERS 870

575 ELECTRICIANS 7

704 LATHE AND TURNING MACHINE OPERATORS 4,542

727 SAWING MACHINE OPERATORS 1,439

769 SLICING AND CUTTING MACHINE OPERATORS 1,063

783 WELDERS AND CUTTERS 1,450

SUBTOTAL 9,577

WHOLESALE TRADE - NONDURABLE GOODS (SIC 51)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
699 MISCELLANEOUS PLANT AND SYSTEM OPERATORS 1,090

SUBTOTAL 1,090

AUTOMOTIVE DEALERS & SERVICE STATIONS (SIC 55)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
549 NOT SPECIFIED MECHANICS AND REPAIRERS 777

885 GARAGE AND SERVICE STATION RELATED OCCUPATIONS 1,370

887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 1,723

SUBTOTAL 3,870

PERSONAL SERVICES (SIC 72)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
018 FUNERAL DIRECTORS 2,427
485
453 JANITORS AND CLEANERS 292

747 PRESSING MACHINE OPERATORS 849
849
748 LAUNDERING AND DRY CLEANING MACHINE OPERATORS 850

SUBTOTAL 4,418
1,334
BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
448 SUPERVISORS, CLEANING AND BUILDING SERVICE WORKERS 28

453 JANITORS AND CLEANERS 23,758
8,732
694 WATER AND SEWAGE TREATMENT PLANT OPERATORS 465

SUBTOTAL 24,251
8,732
AUTO REPAIR, SERVICES, AND GARAGES (SIC 75)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
453 JANITORS AND CLEANERS 292

514 AUTOMOBILE BODY AND RELATED REPAIRERS 2,041

SUBTOTAL 2,333

HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
059 ENGINEERS, N.E.C. 91

095 REGISTERED NURSES 1,050
1,006
103 PHYSICAL THERAPISTS 1,216
911
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 726
580
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 674
455
313 SECRETARIES 90
90
389 ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C. 407
407
446 HEALTH AIDES, EXCEPT NURSING 257
243
449 MAIDS AND HOUSEMEN 21,990
14,368
453 JANITORS AND CLEANERS 2,831
963
459 ATTENDANTS, AMUSEMENT AND RECREATION FACILITIES 187

518 INDUSTRIAL MACHINERY REPAIRERS 437

534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 27

549 NOT SPECIFIED MECHANICS AND REPAIRERS 35

575 ELECTRICIANS 25

643 BOILERMAKERS 141

696 STATIONARY ENGINEERS 144

734 PRINTING MACHINE OPERATORS 14

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 904

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 186
94
SUBTOTAL 31,432
19,117
MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS (SIC 84)
Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
599 CONSTRUCTION TRADES, N.E.C. 92

SUBTOTAL 92

TOTAL 214,376 65,144
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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