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 MALIC ACID
CAS # 6915-15-7
RTECS # ON7175000 
Agent Code M1766

SPECIAL TRADE CONTRACTORS (SIC 17)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
575 ELECTRICIANS 730
SUBTOTAL 730
FOOD AND KINDRED PRODUCTS (SIC 20)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
223 BIOLOGICAL TECHNICIANS 212
 176
453 JANITORS AND CLEANERS 209
 19
756 MIXING AND BLENDING MACHINE OPERATORS 1,059
 529
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 424
 131
878 MACHINE FEEDERS AND OFFBEARERS 76
 76
888 HAND PACKERS AND PACKAGERS 1,530
 1,275
SUBTOTAL 3,510
 2,206
TEXTILE MILL PRODUCTS (SIC 22)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
453 JANITORS AND CLEANERS 205
SUBTOTAL 205
LUMBER AND WOOD PRODUCTS (SIC 24)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
453 JANITORS AND CLEANERS 340
579 PAINTERS, CONSTRUCTION AND MAINTENANCE 1,020
SUBTOTAL 1,360
PRINTING AND PUBLISHING (SIC 27)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
734 PRINTING MACHINE OPERATORS 330
 66
SUBTOTAL 330
 66
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 41
779 MACHINE OPERATORS, NOT SPECIFIED 180
 144
785 ASSEMBLERS 792
 354
SUBTOTAL 1,013
 498
FABRICATED METAL PRODUCTS (SIC 34)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
216 ENGINEERING TECHNICIANS, N.E.C. 355
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 275
575 ELECTRICIANS 40
633 SUPERVISORS, PRODUCTION OCCUPATIONS 25
723 METAL PLATING MACHINE OPERATORS 1,574
756 MIXING AND BLENDING MACHINE OPERATORS 76
785 ASSEMBLERS 17,320
 17,095
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 407
 219
873 PRODUCTION HELPERS 226
SUBTOTAL 20,298
 17,314
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 58
 19
235 TECHNICIANS, N.E.C. 823
 21
453 JANITORS AND CLEANERS 827
549 NOT SPECIFIED MECHANICS AND REPAIRERS 652
 478
683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 488
 394
723 METAL PLATING MACHINE OPERATORS 130
 43
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 106
 65
784 SOLDERERS AND BRAZERS 1,896
 1,731
785 ASSEMBLERS 3,660
 2,844
SUBTOTAL 8,640
 5,595
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 930
 136
453 JANITORS AND CLEANERS 221
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 1,554
 1,554
683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 4,672
 4,099
689 INSPECTORS, TESTERS, AND GRADERS 291
 218
723 METAL PLATING MACHINE OPERATORS 493
 26
769 SLICING AND CUTTING MACHINE OPERATORS 14
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 17
 17
779 MACHINE OPERATORS, NOT SPECIFIED 374
 205
784 SOLDERERS AND BRAZERS 841
 535
785 ASSEMBLERS 10,926
 9,453
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 12
 7
797 PRODUCTION TESTERS 130
 13
887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 397
 132
SUBTOTAL 20,872
 16,395
TRANSPORTATION EQUIPMENT (SIC 37)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
044 AEROSPACE ENGINEERS 85
057 MECHANICAL ENGINEERS 98
215 MECHANICAL ENGINEERING TECHNICIANS 65
216 ENGINEERING TECHNICIANS, N.E.C. 29
224 CHEMICAL TECHNICIANS 17
 3
235 TECHNICIANS, N.E.C. 50
 14
453 JANITORS AND CLEANERS 297
 9
515 AIRCRAFT MECHANICS, EXC. ENGINE 55
 22
523 ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT 9
 3
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 7
637 MACHINISTS 1,843
668 UPHOLSTERERS 57
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 99
 62
723 METAL PLATING MACHINE OPERATORS 20
724 HEAT TREATING EQUIPMENT OPERATORS 74
784 SOLDERERS AND BRAZERS 58
 52
785 ASSEMBLERS 606
 352
797 PRODUCTION TESTERS 147
 49
SUBTOTAL 3,616
 566
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 645
 83
683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 98
 36
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 31
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 24
784 SOLDERERS AND BRAZERS 194
 187
785 ASSEMBLERS 1,748
 1,346
797 PRODUCTION TESTERS 560
 187
SUBTOTAL 3,300
 1,839
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
647 PRECIOUS STONES AND METALS WORKERS (JEWELERS) 254
 254
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 2,658
 2,658
723 METAL PLATING MACHINE OPERATORS 122
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 229
 102
785 ASSEMBLERS 1,273
 875
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 80
 32
797 PRODUCTION TESTERS 462
 239
SUBTOTAL 5,078
 4,160
PIPE LINES, EXCEPT NATURAL GAS (SIC 46)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
235 TECHNICIANS, N.E.C. 599
SUBTOTAL 599
COMMUNICATION (SIC 48)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
235 TECHNICIANS, N.E.C. 2,527
 722
SUBTOTAL 2,527
 722
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
366 METER READERS 1,495
SUBTOTAL 1,495
BUSINESS SERVICES (SIC 73)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
055 ELECTRICAL AND ELECTRONIC ENGINEERS 14
073 CHEMISTS, EXCEPT BIOCHEMISTS 654
 327
215 MECHANICAL ENGINEERING TECHNICIANS 7
216 ENGINEERING TECHNICIANS, N.E.C. 56
224 CHEMICAL TECHNICIANS 1,064
 219
225 SCIENCE TECHNICIANS, N.E.C. 73
683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 1,683
 1,103
SUBTOTAL 3,551
 1,649
MISCELLANEOUS REPAIR SERVICES (SIC 76)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
523 ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT 1,972
549 NOT SPECIFIED MECHANICS AND REPAIRERS 346
SUBTOTAL 2,318
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) Total # Employees
(Male & Female)		 Total # Female
Employees
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 710
 568
224 CHEMICAL TECHNICIANS 82
 27
453 JANITORS AND CLEANERS 294
575 ELECTRICIANS 147
SUBTOTAL 1,233
 595
TOTAL 80,675 51,605
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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