Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
215	MECHANICAL ENGINEERING TECHNICIANS	58
216	ENGINEERING TECHNICIANS, N.E.C.	25	7
225	SCIENCE TECHNICIANS, N.E.C.	14
453	JANITORS AND CLEANERS	1,069
544	MILLWRIGHTS	1,130
549	NOT SPECIFIED MECHANICS AND REPAIRERS	662
633	SUPERVISORS, PRODUCTION OCCUPATIONS	181	78
634	TOOL AND DIE MAKERS	806
637	MACHINISTS	3,034
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	415	7
647	PRECIOUS STONES AND METALS WORKERS (JEWELERS)	405	148
655	MISCELLANEOUS PRECISION METAL WORKERS	130	130
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	123
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	311
704	LATHE AND TURNING MACHINE OPERATORS	16
705	MILLING AND PLANING MACHINE OPERATORS	876
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	2,169	169
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	29
719	MOLDING AND CASTING MACHINE OPERATORS	95
768	CRUSHING AND GRINDING MACHINE OPERATORS	4
769	SLICING AND CUTTING MACHINE OPERATORS	7
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,193	868
785	ASSEMBLERS	174
889	LABORERS, EXCEPT CONSTRUCTION	16
TOTAL		13,942	1,406

*(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.