Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	460
073	CHEMISTS, EXCEPT BIOCHEMISTS	154
224	CHEMICAL TECHNICIANS	1,664	193
225	SCIENCE TECHNICIANS, N.E.C.	590
235	TECHNICIANS, N.E.C.	1,499
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	262
385	DATA-ENTRY KEYERS	816
453	JANITORS AND CLEANERS	9,757
505	AUTOMOBILE MECHANICS	2,079
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	4,056
515	AIRCRAFT MECHANICS, EXC. ENGINE	105
518	INDUSTRIAL MACHINERY REPAIRERS	1,075
519	MACHINERY MAINTENANCE OCCUPATIONS	22
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	1,553
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	661
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	2,349
549	NOT SPECIFIED MECHANICS AND REPAIRERS	832
558	SUPERVISORS, N.E.C.	122
567	CARPENTERS	1,533
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,106
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	11,379
587	PLUMBER, PIPEFITTER, AND STEAMFITTER APPRENTICES	460
588	CONCRETE AND TERRAZZO FINISHERS	478
593	INSULATION WORKERS	44
613	SUPERVISORS, EXTRACTIVE OCCUPATIONS	335
614	DRILLERS, OIL WELL	5,362
633	SUPERVISORS, PRODUCTION OCCUPATIONS	678
637	MACHINISTS	87
653	SHEET METAL WORKERS	75
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	1,826
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	788
687	BAKERS	1,356
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	66
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	2,025
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	227
704	LATHE AND TURNING MACHINE OPERATORS	97
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	844	97
707	ROLLING MACHINE OPERATORS	103
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	350
719	MOLDING AND CASTING MACHINE OPERATORS	1,126	119
724	HEAT TREATING EQUIPMENT OPERATORS	82
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	114
727	SAWING MACHINE OPERATORS	84
728	SHAPING AND JOINING MACHINE OPERATORS	12
756	MIXING AND BLENDING MACHINE OPERATORS	989
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	127
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	61
764	WASHING, CLEANING, AND PICKLING MACHINE OPERATORS	94
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	5,489	29
768	CRUSHING AND GRINDING MACHINE OPERATORS	293
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,860	43
779	MACHINE OPERATORS, NOT SPECIFIED	2,907
783	WELDERS AND CUTTERS	883
785	ASSEMBLERS	245	108
795	MISCELLANEOUS HAND WORKING OCCUPATIONS	12
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	171
804	TRUCK DRIVERS, HEAVY	2,675
824	LOCOMOTIVE OPERATING OCCUPATIONS	1,449
844	OPERATING ENGINEERS	2,501
849	CRANE AND TOWER OPERATORS	598
853	EXCAVATING AND LOADING MACHINE OPERATORS	1,997
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	234
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	2,832
869	CONSTRUCTION LABORERS	3,380
873	PRODUCTION HELPERS	74
878	MACHINE FEEDERS AND OFFBEARERS	25
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	4,542
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	41
889	LABORERS, EXCEPT CONSTRUCTION	2,173
TOTAL		96,345	590

*(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.