Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	1,553
544	MILLWRIGHTS	212
558	SUPERVISORS, N.E.C.	384
575	ELECTRICIANS	559	9
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,106
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	2,619
634	TOOL AND DIE MAKERS	88
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	132	4
704	LATHE AND TURNING MACHINE OPERATORS	12
705	MILLING AND PLANING MACHINE OPERATORS	106
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	18
769	SLICING AND CUTTING MACHINE OPERATORS	51
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	159	159
783	WELDERS AND CUTTERS	1,652
785	ASSEMBLERS	335
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	5
TOTAL		10,992	172

*(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.