Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
045	METALLURGICAL AND MATERIALS ENGINEERS	14
225	SCIENCE TECHNICIANS, N.E.C.	627
453	JANITORS AND CLEANERS	415	35
518	INDUSTRIAL MACHINERY REPAIRERS	232
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	220
549	NOT SPECIFIED MECHANICS AND REPAIRERS	38
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	8,962
634	TOOL AND DIE MAKERS	120
637	MACHINISTS	3,446	82
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	44
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	26
704	LATHE AND TURNING MACHINE OPERATORS	1,163
708	DRILLING AND BORING MACHINE OPERATORS	41
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	1,461	52
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	90
727	SAWING MACHINE OPERATORS	90
758	COMPRESSING AND COMPACTING MACHINE OPERATORS	206
769	SLICING AND CUTTING MACHINE OPERATORS	155
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	203
779	MACHINE OPERATORS, NOT SPECIFIED	16,454	4,352
785	ASSEMBLERS	65
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	3
TOTAL		34,074	4,521

*(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.