Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
269	SALES WORKERS, PARTS	132
365	STOCK AND INVENTORY CLERKS	256
453	JANITORS AND CLEANERS	4,879	16
505	AUTOMOBILE MECHANICS	342
518	INDUSTRIAL MACHINERY REPAIRERS	785
544	MILLWRIGHTS	153
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	718
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,717
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	180
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	12,774	17
633	SUPERVISORS, PRODUCTION OCCUPATIONS	132
637	MACHINISTS	1,142	9
643	BOILERMAKERS	34	6
653	SHEET METAL WORKERS	361	43
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	620
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	48
779	MACHINE OPERATORS, NOT SPECIFIED	922
783	WELDERS AND CUTTERS	11,713	16
785	ASSEMBLERS	2,621	31
804	TRUCK DRIVERS, HEAVY	283
889	LABORERS, EXCEPT CONSTRUCTION	486
TOTAL		41,297	136

*(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.