Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	100	78
216	ENGINEERING TECHNICIANS, N.E.C.	116	39
365	STOCK AND INVENTORY CLERKS	128
453	JANITORS AND CLEANERS	870	18
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	18
633	SUPERVISORS, PRODUCTION OCCUPATIONS	562
634	TOOL AND DIE MAKERS	49
637	MACHINISTS	20,039	434
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	167	52
649	ENGRAVERS, METAL	642	128
653	SHEET METAL WORKERS	128
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	3,037	781
704	LATHE AND TURNING MACHINE OPERATORS	844
705	MILLING AND PLANING MACHINE OPERATORS	1,086
708	DRILLING AND BORING MACHINE OPERATORS	363	213
724	HEAT TREATING EQUIPMENT OPERATORS	44
726	WOOD LATHE, ROUTING, AND PLANING MACHINE OPERATORS	64
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	142	20
779	MACHINE OPERATORS, NOT SPECIFIED	3,593	80
783	WELDERS AND CUTTERS	607	10
785	ASSEMBLERS	44
TOTAL		32,644	1,854

*(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.