Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	75	26
235	TECHNICIANS, N.E.C.	307	15
357	MESSENGERS	278
446	HEALTH AIDES, EXCEPT NURSING	350
449	MAIDS AND HOUSEMEN	824	750
453	JANITORS AND CLEANERS	2,281	533
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	343
518	INDUSTRIAL MACHINERY REPAIRERS	40
519	MACHINERY MAINTENANCE OCCUPATIONS	271
529	TELEPHONE INSTALLERS AND REPAIRERS	1,792	36
549	NOT SPECIFIED MECHANICS AND REPAIRERS	870
575	ELECTRICIANS	682
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	433
634	TOOL AND DIE MAKERS	3,539
653	SHEET METAL WORKERS	88
689	INSPECTORS, TESTERS, AND GRADERS	46	34
704	LATHE AND TURNING MACHINE OPERATORS	4,542
719	MOLDING AND CASTING MACHINE OPERATORS	1,269
723	METAL PLATING MACHINE OPERATORS	17	6
734	PRINTING MACHINE OPERATORS	551	40
753	CEMENTING AND GLUING MACHINE OPERATORS	616
755	EXTRUDING AND FORMING MACHINE OPERATORS	321
756	MIXING AND BLENDING MACHINE OPERATORS	242	3
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	219
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	271
769	SLICING AND CUTTING MACHINE OPERATORS	3,709	2,245
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,629	126
779	MACHINE OPERATORS, NOT SPECIFIED	3,500	2,581
783	WELDERS AND CUTTERS	1,551
785	ASSEMBLERS	5,473	5,473
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	83	83
TOTAL		37,212	11,951

*(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.