Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
099	OCCUPATIONAL THERAPISTS	21	21
449	MAIDS AND HOUSEMEN	1,257	629
453	JANITORS AND CLEANERS	5,823	1,997
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	55
653	SHEET METAL WORKERS	55
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	110
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	277
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	55
783	WELDERS AND CUTTERS	165
785	ASSEMBLERS	221	55
TOTAL		8,039	2,701

*(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.