Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
368	WEIGHERS, MEASURERS, AND CHECKERS	43
449	MAIDS AND HOUSEMEN	457	352
453	JANITORS AND CLEANERS	1,125	495
688	FOOD BATCHMAKERS	323
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	574
756	MIXING AND BLENDING MACHINE OPERATORS	60
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	88	11
797	PRODUCTION TESTERS	43
TOTAL		2,713	857

*(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.