Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	345
453	JANITORS AND CLEANERS	870
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	2,172
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	186
549	NOT SPECIFIED MECHANICS AND REPAIRERS	135
686	BUTCHERS AND MEAT CUTTERS	3,501	645
723	METAL PLATING MACHINE OPERATORS	1,320	81
724	HEAT TREATING EQUIPMENT OPERATORS	524
768	CRUSHING AND GRINDING MACHINE OPERATORS	28
779	MACHINE OPERATORS, NOT SPECIFIED	467
873	PRODUCTION HELPERS	2,186
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	2,015
889	LABORERS, EXCEPT CONSTRUCTION	471
TOTAL		14,220	726

*(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.