National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation*

Agent Name CITRIC ACID
CAS # 77-92-9
RTECS # GE7350000
Agent Code 19680

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
015 MANAGERS, MEDICINE AND HEALTH 9  
018 FUNERAL DIRECTORS 630 70
019 MANAGERS AND ADMINISTRATORS, N.E.C. 1,554 598
023 ACCOUNTANTS AND AUDITORS 113  
027 PERSONNEL, TRAINING, AND LABOR RELATIONS SPECIALISTS 673 525
036 INSPECTORS AND COMPLIANCE OFFICERS, EXC. CONSTRUCTION 32 32
044 AEROSPACE ENGINEERS 85  
053 CIVIL ENGINEERS 28  
055 ELECTRICAL AND ELECTRONIC ENGINEERS 144  
056 INDUSTRIAL ENGINEERS 52  
057 MECHANICAL ENGINEERS 463  
059 ENGINEERS, N.E.C. 465 11
073 CHEMISTS, EXCEPT BIOCHEMISTS 4,517 1,581
075 GEOLOGISTS AND GEODESISTS 28  
078 BIOLOGICAL AND LIFE SCIENTISTS 182 139
083 MEDICAL SCIENTISTS 1,789 1,350
084 PHYSICIANS 24,580 13,096
086 VETERINARIANS 7,023 633
095 REGISTERED NURSES 687,150 629,873
096 PHARMACISTS 12,878 7,403
097 DIETITIANS 1,301 1,259
098 INHALATION THERAPISTS 4,934 3,141
099 OCCUPATIONAL THERAPISTS 769 645
103 PHYSICAL THERAPISTS 15,293 11,490
105 THERAPISTS, N.E.C. 529 348
106 PHYSICIANS' ASSISTANTS 4,929 2,464
163 COUNSELORS, EDUCATIONAL AND VOCATIONAL 181 127
185 DESIGNERS 234 92
188 PAINTERS, SCULPTORS, CRAFT-ARTISTS, AND ARTIST PRINTMAKERS 324 101
189 PHOTOGRAPHERS 4,132 469
195 EDITORS AND REPORTERS 102  
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 41,737 29,736
206 RADIOLOGIC TECHNICIANS 30,597 20,317
207 LICENSED PRACTICAL NURSES 61,457 57,322
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 16,047 12,878
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 1,664 182
214 INDUSTRIAL ENGINEERING TECHNICIANS 14  
215 MECHANICAL ENGINEERING TECHNICIANS 58  
216 ENGINEERING TECHNICIANS, N.E.C. 5,824 2,591
217 DRAFTING OCCUPATIONS 3,475 326
223 BIOLOGICAL TECHNICIANS 5,250 2,445
224 CHEMICAL TECHNICIANS 9,299 3,023
225 SCIENCE TECHNICIANS, N.E.C. 2,995 878
235 TECHNICIANS, N.E.C. 5,646 2,963
274 SALES WORKERS, OTHER COMMODITIES 299 299
303 SUPERVISORS, GENERAL OFFICE 433 408
308 COMPUTER OPERATORS 194  
313 SECRETARIES 3,806 3,806
319 RECEPTIONISTS 1,017 1,017
335 FILE CLERKS 1,047 579
337 BOOKKEEPERS, ACCOUNTING, AND AUDITING CLERKS 339 339
347 OFFICE MACHINE OPERATORS, N.E.C. 17 6
356 MAIL CLERKS, EXC. POSTAL SERVICE 1,561 1,561
357 MESSENGERS 278  
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 3,585 61
365 STOCK AND INVENTORY CLERKS 4,802 3,433
368 WEIGHERS, MEASURERS, AND CHECKERS 451  
374 MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C. 18 18
379 GENERAL OFFICE CLERKS 536 275
385 DATA-ENTRY KEYERS 568 568
389 ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C. 1,119 1,041
435 WAITERS AND WAITRESSES 297 297
436 COOKS, EXCEPT SHORT ORDER 795 709
444 MISCELLANEOUS FOOD PREPARATION OCCUPATIONS 6,711 5,677
445 DENTAL ASSISTANTS 107 57
446 HEALTH AIDES, EXCEPT NURSING 13,788 8,631
447 NURSING AIDES, ORDERLIES, AND ATTENDANTS 55,030 47,566
448 SUPERVISORS, CLEANING AND BUILDING SERVICE WORKERS 306 51
449 MAIDS AND HOUSEMEN 30,822 21,500
453 JANITORS AND CLEANERS 50,827 14,080
458 HAIRDRESSERS AND COSMETOLOGISTS 46,838 35,653
469 PERSONAL SERVICE OCCUPATIONS, N.E.C. 244  
486 GROUNDSKEEPERS AND GARDENERS, EXCEPT FARM 770 378
487 ANIMAL CARETAKERS, EXCEPT FARM 6,375 4,090
515 AIRCRAFT MECHANICS, EXC. ENGINE 126  
516 HEAVY EQUIPMENT MECHANICS 671  
518 INDUSTRIAL MACHINERY REPAIRERS 637  
519 MACHINERY MAINTENANCE OCCUPATIONS 419  
527 TELEPHONE LINE INSTALLERS AND REPAIRERS 225  
529 TELEPHONE INSTALLERS AND REPAIRERS 4,724  
534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 76  
535 CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS 41 41
544 MILLWRIGHTS 1,277  
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 2,620  
549 NOT SPECIFIED MECHANICS AND REPAIRERS 2,872  
563 BRICKMASONS AND STONEMASONS 10,337  
565 TILE SETTERS, HARD AND SOFT 2,056  
567 CARPENTERS 282  
575 ELECTRICIANS 1,289  
579 PAINTERS, CONSTRUCTION AND MAINTENANCE 297 119
584 PLASTERERS 2,329  
585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 606  
593 INSULATION WORKERS 44  
595 ROOFERS 1,851  
597 STRUCTURAL METAL WORKERS 258  
614 DRILLERS, OIL WELL 1,659  
616 MINING MACHINE OPERATORS 8,072  
617 MINING OCCUPATIONS, N.E.C. 13,996  
633 SUPERVISORS, PRODUCTION OCCUPATIONS 7,929 1,660
634 TOOL AND DIE MAKERS 2,748 22
637 MACHINISTS 22,652 915
643 BOILERMAKERS 51  
645 PATTERNMAKERS AND MODEL MAKERS, METAL 514  
647 PRECIOUS STONES AND METALS WORKERS (JEWELERS) 366  
649 ENGRAVERS, METAL 530 7
653 SHEET METAL WORKERS 88  
658 FURNITURE AND WOOD FINISHERS 50 50
667 TAILORS 192 112
668 UPHOLSTERERS 771  
676 PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS 310 207
677 OPTICAL GOODS WORKERS 42  
678 DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS 165  
679 BOOKBINDERS 462 231
683 ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS 6,425 4,218
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 3,761 828
686 BUTCHERS AND MEAT CUTTERS 4,508 1,765
687 BAKERS 4,311 568
688 FOOD BATCHMAKERS 1,752 63
689 INSPECTORS, TESTERS, AND GRADERS 14  
694 WATER AND SEWAGE TREATMENT PLANT OPERATORS 66  
695 POWER PLANT OPERATORS 393  
696 STATIONARY ENGINEERS 745  
699 MISCELLANEOUS PLANT AND SYSTEM OPERATORS 26  
703 LATHE AND TURNING MACHINE SET-UP OPERATORS 32  
704 LATHE AND TURNING MACHINE OPERATORS 7  
706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 72  
708 DRILLING AND BORING MACHINE OPERATORS 354  
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 757 98
715 MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS 436  
717 FABRICATING MACHINE OPERATORS, N.E.C. 549  
719 MOLDING AND CASTING MACHINE OPERATORS 1,219 616
723 METAL PLATING MACHINE OPERATORS 11,949 3,433
724 HEAT TREATING EQUIPMENT OPERATORS 85  
725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 617 381
727 SAWING MACHINE OPERATORS 385  
734 PRINTING MACHINE OPERATORS 58,734 1,961
735 PHOTOENGRAVERS AND LITHOGRAPHERS 4,530 344
736 TYPESETTERS AND COMPOSITORS 15,258 6,066
737 MISCELLANEOUS PRINTING MACHINE OPERATORS 2,817 768
744 TEXTILE SEWING MACHINE OPERATORS 9,936 9,704
745 SHOE MACHINE OPERATORS 1,244 1,211
747 PRESSING MACHINE OPERATORS 215 191
748 LAUNDERING AND DRY CLEANING MACHINE OPERATORS 7,395 5,937
749 MISCELLANEOUS TEXTILE MACHINE OPERATORS 5,703 582
753 CEMENTING AND GLUING MACHINE OPERATORS 922  
754 PACKAGING AND FILLING MACHINE OPERATORS 14,950 3,713
755 EXTRUDING AND FORMING MACHINE OPERATORS 92  
756 MIXING AND BLENDING MACHINE OPERATORS 16,391 2,871
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 5,130 386
758 COMPRESSING AND COMPACTING MACHINE OPERATORS 91  
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 1,619 237
763 ROASTING AND BAKING MACHINE OPERATORS, FOOD 117  
764 WASHING, CLEANING, AND PICKLING MACHINE OPERATORS 2  
765 FOLDING MACHINE OPERATORS 2,060 1,508
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 2,366  
768 CRUSHING AND GRINDING MACHINE OPERATORS 1,170  
769 SLICING AND CUTTING MACHINE OPERATORS 2,142 313
774 PHOTOGRAPHIC PROCESS MACHINE OPERATORS 8,864 3,158
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 25,648 7,320
779 MACHINE OPERATORS, NOT SPECIFIED 34,196 13,083
783 WELDERS AND CUTTERS 1,695  
784 SOLDERERS AND BRAZERS 246 129
785 ASSEMBLERS 30,942 16,903
793 HAND ENGRAVING AND PRINTING OCCUPATIONS 526 33
795 MISCELLANEOUS HAND WORKING OCCUPATIONS 90  
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 15,894 7,051
797 PRODUCTION TESTERS 880 366
798 PRODUCTION SAMPLERS AND WEIGHERS 111  
799 GRADERS AND SORTERS, EXCEPT AGRICULTURAL 190 190
804 TRUCK DRIVERS, HEAVY 1,421  
806 DRIVER-SALES WORKERS 335  
844 OPERATING ENGINEERS 42  
856 INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS 3,079 110
859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 1,843 681
869 CONSTRUCTION LABORERS 20,656  
873 PRODUCTION HELPERS 1,584 26
878 MACHINE FEEDERS AND OFFBEARERS 995 76
883 FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C. 287 51
885 GARAGE AND SERVICE STATION RELATED OCCUPATIONS 5,761 1,098
887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 7,364 811
888 HAND PACKERS AND PACKAGERS 18,711 16,134
889 LABORERS, EXCEPT CONSTRUCTION 32,710 4,453
TOTAL 1,691,218 1,083,005

*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (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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