Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	133
225	SCIENCE TECHNICIANS, N.E.C.	148	37
453	JANITORS AND CLEANERS	2,190
503	SUPERVISORS, MECHANICS AND REPAIRERS	2,429
508	AIRCRAFT ENGINE MECHANICS	7,028	80
515	AIRCRAFT MECHANICS, EXC. ENGINE	14
575	ELECTRICIANS	108
633	SUPERVISORS, PRODUCTION OCCUPATIONS	729
634	TOOL AND DIE MAKERS	1,449
637	MACHINISTS	2,904
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	53
704	LATHE AND TURNING MACHINE OPERATORS	34	3
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	85	14
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	4,469	310
713	FORGING MACHINE OPERATORS	34
717	FABRICATING MACHINE OPERATORS, N.E.C.	3
724	HEAT TREATING EQUIPMENT OPERATORS	370
755	EXTRUDING AND FORMING MACHINE OPERATORS	57
769	SLICING AND CUTTING MACHINE OPERATORS	190	11
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,550	6
779	MACHINE OPERATORS, NOT SPECIFIED	10,880	6
783	WELDERS AND CUTTERS	1,050
785	ASSEMBLERS	410	14
787	HAND MOLDING, CASTING, AND FORMING OCCUPATIONS	54	23
794	HAND GRINDING AND POLISHING OCCUPATIONS	51
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	3,021
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	373
889	LABORERS, EXCEPT CONSTRUCTION	388
TOTAL		40,204	504

*(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.