Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	663
505	AUTOMOBILE MECHANICS	4,025
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	658
544	MILLWRIGHTS	45
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	240
575	ELECTRICIANS	134
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,069	69
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	684
TOTAL		7,519	69

*(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.