Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
027	PERSONNEL, TRAINING, AND LABOR RELATIONS SPECIALISTS	50
055	ELECTRICAL AND ELECTRONIC ENGINEERS	5
073	CHEMISTS, EXCEPT BIOCHEMISTS	63
216	ENGINEERING TECHNICIANS, N.E.C.	78
235	TECHNICIANS, N.E.C.	100	25
453	JANITORS AND CLEANERS	15,455	1,438
505	AUTOMOBILE MECHANICS	5,635
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	1,664
515	AIRCRAFT MECHANICS, EXC. ENGINE	4,018
516	HEAVY EQUIPMENT MECHANICS	309
518	INDUSTRIAL MACHINERY REPAIRERS	817
519	MACHINERY MAINTENANCE OCCUPATIONS	1,185	716
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	80
526	HOUSEHOLD APPLIANCE AND POWER TOOL REPAIRERS	35
539	MECHANICAL CONTROLS AND VALVE REPAIRERS	37
543	ELEVATOR INSTALLERS AND REPAIRERS	25
544	MILLWRIGHTS	1,903
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	754	4
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,488	4
567	CARPENTERS	5,041
575	ELECTRICIANS	357
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	979
613	SUPERVISORS, EXTRACTIVE OCCUPATIONS	335
614	DRILLERS, OIL WELL	5,362
633	SUPERVISORS, PRODUCTION OCCUPATIONS	105
637	MACHINISTS	668	29
643	BOILERMAKERS	88
647	PRECIOUS STONES AND METALS WORKERS (JEWELERS)	145
674	MISCELLANEOUS PRECISION APPAREL AND FABRIC WORKERS	64
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	315
704	LATHE AND TURNING MACHINE OPERATORS	6
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	156
713	FORGING MACHINE OPERATORS	62
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	1,626	198
719	MOLDING AND CASTING MACHINE OPERATORS	1,666	351
734	PRINTING MACHINE OPERATORS	608
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	827	79
755	EXTRUDING AND FORMING MACHINE OPERATORS	784	65
756	MIXING AND BLENDING MACHINE OPERATORS	4,896	296
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	216
769	SLICING AND CUTTING MACHINE OPERATORS	628	58
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	9,901	436
779	MACHINE OPERATORS, NOT SPECIFIED	15,802	4,456
783	WELDERS AND CUTTERS	1,178
784	SOLDERERS AND BRAZERS	12	6
785	ASSEMBLERS	10,344	4,477
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	366	29
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	78
869	CONSTRUCTION LABORERS	2,910
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	34
889	LABORERS, EXCEPT CONSTRUCTION	1,084	25
TOTAL		101,343	12,693

*(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.