Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
048	CHEMICAL ENGINEERS	48
224	CHEMICAL TECHNICIANS	3	3
453	JANITORS AND CLEANERS	2,195
508	AIRCRAFT ENGINE MECHANICS	20
514	AUTOMOBILE BODY AND RELATED REPAIRERS	593
515	AIRCRAFT MECHANICS, EXC. ENGINE	162
516	HEAVY EQUIPMENT MECHANICS	432
518	INDUSTRIAL MACHINERY REPAIRERS	72
544	MILLWRIGHTS	45
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	376	376
599	CONSTRUCTION TRADES, N.E.C.	3,240
637	MACHINISTS	86
653	SHEET METAL WORKERS	2,209
717	FABRICATING MACHINE OPERATORS, N.E.C.	768	658
719	MOLDING AND CASTING MACHINE OPERATORS	134
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	69
756	MIXING AND BLENDING MACHINE OPERATORS	140	45
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	4,228	350
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	13
779	MACHINE OPERATORS, NOT SPECIFIED	2,341
785	ASSEMBLERS	54	6
804	TRUCK DRIVERS, HEAVY	207
844	OPERATING ENGINEERS	75
869	CONSTRUCTION LABORERS	456
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	56
888	HAND PACKERS AND PACKAGERS	225
889	LABORERS, EXCEPT CONSTRUCTION	390
TOTAL		18,638	1,438

*(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.