Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	62
549	NOT SPECIFIED MECHANICS AND REPAIRERS	247
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	145
634	TOOL AND DIE MAKERS	82
637	MACHINISTS	7,564	283
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	137
704	LATHE AND TURNING MACHINE OPERATORS	57
705	MILLING AND PLANING MACHINE OPERATORS	2,242	1,116
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	182	40
708	DRILLING AND BORING MACHINE OPERATORS	354
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	363
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	643
719	MOLDING AND CASTING MACHINE OPERATORS	139
724	HEAT TREATING EQUIPMENT OPERATORS	18
769	SLICING AND CUTTING MACHINE OPERATORS	159
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,320	342
779	MACHINE OPERATORS, NOT SPECIFIED	205	10
785	ASSEMBLERS	3,113
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	247
TOTAL		17,279	1,790

*(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.