Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	4,862	604
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	1,701
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	1,553
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	1,066
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,106
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	2,619
634	TOOL AND DIE MAKERS	49
637	MACHINISTS	1,959
723	METAL PLATING MACHINE OPERATORS	239	17
724	HEAT TREATING EQUIPMENT OPERATORS	18
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	94
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,947	24
779	MACHINE OPERATORS, NOT SPECIFIED	56
783	WELDERS AND CUTTERS	883
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	157	70
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	2,832
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	7
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	103	26
TOTAL		23,252	740

*(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.