Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
044	AEROSPACE ENGINEERS	85
073	CHEMISTS, EXCEPT BIOCHEMISTS	96	32
453	JANITORS AND CLEANERS	1,880	80
515	AIRCRAFT MECHANICS, EXC. ENGINE	62
634	TOOL AND DIE MAKERS	67	22
637	MACHINISTS	3,628	12
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	359
683	ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS	66	53
705	MILLING AND PLANING MACHINE OPERATORS	18
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	1,181	21
708	DRILLING AND BORING MACHINE OPERATORS	125
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	359
724	HEAT TREATING EQUIPMENT OPERATORS	74
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	22	5
769	SLICING AND CUTTING MACHINE OPERATORS	14
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,799	178
779	MACHINE OPERATORS, NOT SPECIFIED	149	123
785	ASSEMBLERS	394	145
789	HAND PAINTING, COATING, AND DECORATING OCCUPATIONS	2
797	PRODUCTION TESTERS	147	49
TOTAL		10,528	721

*(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.