Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	103	8
453	JANITORS AND CLEANERS	41
563	BRICKMASONS AND STONEMASONS	123
723	METAL PLATING MACHINE OPERATORS	65
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	185
753	CEMENTING AND GLUING MACHINE OPERATORS	61	61
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	58
779	MACHINE OPERATORS, NOT SPECIFIED	1,124	281
865	HELPERS, CONSTRUCTION TRADES	288
888	HAND PACKERS AND PACKAGERS	1,124	422
889	LABORERS, EXCEPT CONSTRUCTION	37
TOTAL		3,210	772

*(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.