Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	80
453	JANITORS AND CLEANERS	100
518	INDUSTRIAL MACHINERY REPAIRERS	140
544	MILLWRIGHTS	153
633	SUPERVISORS, PRODUCTION OCCUPATIONS	65
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	253
783	WELDERS AND CUTTERS	1,341	66
784	SOLDERERS AND BRAZERS	208	43
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	32
889	LABORERS, EXCEPT CONSTRUCTION	354
TOTAL		2,726	110

*(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.