Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	381
518	INDUSTRIAL MACHINERY REPAIRERS	606	55
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	840
575	ELECTRICIANS	6,622
576	ELECTRICIAN APPRENTICES	368
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	335
633	SUPERVISORS, PRODUCTION OCCUPATIONS	306
634	TOOL AND DIE MAKERS	175
655	MISCELLANEOUS PRECISION METAL WORKERS	523	380
668	UPHOLSTERERS	408	306
727	SAWING MACHINE OPERATORS	102
729	NAILING AND TACKING MACHINE OPERATORS	385	275
744	TEXTILE SEWING MACHINE OPERATORS	802	802
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	385	385
769	SLICING AND CUTTING MACHINE OPERATORS	441
785	ASSEMBLERS	3,177	1,758
869	CONSTRUCTION LABORERS	671
873	PRODUCTION HELPERS	3
888	HAND PACKERS AND PACKAGERS	330	330
TOTAL		16,862	4,292

*(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.