Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	126
224	CHEMICAL TECHNICIANS	95	63
453	JANITORS AND CLEANERS	221
669	SHOE REPAIRERS	65	32
756	MIXING AND BLENDING MACHINE OPERATORS	95
783	WELDERS AND CUTTERS	14
TOTAL		615	95

*(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.