Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	371	3
453	JANITORS AND CLEANERS	3,031	28
519	MACHINERY MAINTENANCE OCCUPATIONS	339
526	HOUSEHOLD APPLIANCE AND POWER TOOL REPAIRERS	65
544	MILLWRIGHTS	979
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	403
549	NOT SPECIFIED MECHANICS AND REPAIRERS	570
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	931
633	SUPERVISORS, PRODUCTION OCCUPATIONS	75
637	MACHINISTS	3,423
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	97
707	ROLLING MACHINE OPERATORS	1,402	28
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	199
719	MOLDING AND CASTING MACHINE OPERATORS	1,392	374
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	2,432	84
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	577
785	ASSEMBLERS	540	3
787	HAND MOLDING, CASTING, AND FORMING OCCUPATIONS	737	58
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	312	37
TOTAL		17,877	616

*(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.