Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	728
053	CIVIL ENGINEERS	67
056	INDUSTRIAL ENGINEERS	81
073	CHEMISTS, EXCEPT BIOCHEMISTS	322
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	293
224	CHEMICAL TECHNICIANS	845	319
225	SCIENCE TECHNICIANS, N.E.C.	511	346
318	TRANSPORTATION TICKET AND RESERVATION AGENTS	1,118	233
327	ORDER CLERKS	1,235
453	JANITORS AND CLEANERS	4,636
465	PUBLIC TRANSPORTATION ATTENDANTS	1,455	243
505	AUTOMOBILE MECHANICS	7,747
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	25,579	539
514	AUTOMOBILE BODY AND RELATED REPAIRERS	97
515	AIRCRAFT MECHANICS, EXC. ENGINE	70	70
516	HEAVY EQUIPMENT MECHANICS	2,187
519	MACHINERY MAINTENANCE OCCUPATIONS	1,011
544	MILLWRIGHTS	444	4
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	828
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,199
558	SUPERVISORS, N.E.C.	717
567	CARPENTERS	546
575	ELECTRICIANS	3,519
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	1,729
593	INSULATION WORKERS	483	161
599	CONSTRUCTION TRADES, N.E.C.	32
633	SUPERVISORS, PRODUCTION OCCUPATIONS	322
637	MACHINISTS	1,081
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	967
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	516
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	644
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	403
768	CRUSHING AND GRINDING MACHINE OPERATORS	323
769	SLICING AND CUTTING MACHINE OPERATORS	258
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	6,017	81
783	WELDERS AND CUTTERS	1,910
785	ASSEMBLERS	1,866	24
804	TRUCK DRIVERS, HEAVY	15,620	647
806	DRIVER-SALES WORKERS	3,430	1,258
844	OPERATING ENGINEERS	10,780	862
853	EXCAVATING AND LOADING MACHINE OPERATORS	781
855	GRADER, DOZER, AND SCRAPER OPERATORS	468
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	322
869	CONSTRUCTION LABORERS	3,064
875	GARBAGE COLLECTORS	429
878	MACHINE FEEDERS AND OFFBEARERS	322
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	644
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	108
889	LABORERS, EXCEPT CONSTRUCTION	7,676
TOTAL		116,427	4,786

*(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.