Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
389	ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C.	1,462
453	JANITORS AND CLEANERS	3,113	389
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	6
783	WELDERS AND CUTTERS	129
785	ASSEMBLERS	509	229
TOTAL		5,220	618

*(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.