Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	80
453	JANITORS AND CLEANERS	338
633	SUPERVISORS, PRODUCTION OCCUPATIONS	194
637	MACHINISTS	2,036
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	31	10
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	100
704	LATHE AND TURNING MACHINE OPERATORS	83	31
705	MILLING AND PLANING MACHINE OPERATORS	21	21
708	DRILLING AND BORING MACHINE OPERATORS	10	10
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	504	194
769	SLICING AND CUTTING MACHINE OPERATORS	39
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	775
779	MACHINE OPERATORS, NOT SPECIFIED	78
TOTAL		4,287	266

*(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.