Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
363	PRODUCTION COORDINATORS	4,411
374	MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C.	63
453	JANITORS AND CLEANERS	10,663	300
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	559
508	AIRCRAFT ENGINE MECHANICS	6,707	57
516	HEAVY EQUIPMENT MECHANICS	271
518	INDUSTRIAL MACHINERY REPAIRERS	1,360
519	MACHINERY MAINTENANCE OCCUPATIONS	182	17
544	MILLWRIGHTS	2,757	17
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	515
549	NOT SPECIFIED MECHANICS AND REPAIRERS	3,397	4
558	SUPERVISORS, N.E.C.	374
565	TILE SETTERS, HARD AND SOFT	1,188
575	ELECTRICIANS	17,531
576	ELECTRICIAN APPRENTICES	368
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	933
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	19,958	12
633	SUPERVISORS, PRODUCTION OCCUPATIONS	315
634	TOOL AND DIE MAKERS	2,553	2
637	MACHINISTS	12,982
643	BOILERMAKERS	54
655	MISCELLANEOUS PRECISION METAL WORKERS	22
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	158
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	684
689	INSPECTORS, TESTERS, AND GRADERS	44
696	STATIONARY ENGINEERS	44
704	LATHE AND TURNING MACHINE OPERATORS	1,534
705	MILLING AND PLANING MACHINE OPERATORS	434
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	6,478	1,544
707	ROLLING MACHINE OPERATORS	1,031
708	DRILLING AND BORING MACHINE OPERATORS	167
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	823	30
713	FORGING MACHINE OPERATORS	287	128
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	320	320
723	METAL PLATING MACHINE OPERATORS	41
724	HEAT TREATING EQUIPMENT OPERATORS	590
769	SLICING AND CUTTING MACHINE OPERATORS	859	253
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,901	389
779	MACHINE OPERATORS, NOT SPECIFIED	3,059	26
783	WELDERS AND CUTTERS	2,754
785	ASSEMBLERS	700	61
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	1,075	64
849	CRANE AND TOWER OPERATORS	197
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	3,430	346
865	HELPERS, CONSTRUCTION TRADES	19
869	CONSTRUCTION LABORERS	1,735
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	576
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	33
889	LABORERS, EXCEPT CONSTRUCTION	274
TOTAL		117,410	3,571

*(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.