Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
045	METALLURGICAL AND MATERIALS ENGINEERS	64
216	ENGINEERING TECHNICIANS, N.E.C.	24
359	DISPATCHERS	317
453	JANITORS AND CLEANERS	6,546	121
505	AUTOMOBILE MECHANICS	1,578
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	4,235
514	AUTOMOBILE BODY AND RELATED REPAIRERS	97
516	HEAVY EQUIPMENT MECHANICS	1,145
518	INDUSTRIAL MACHINERY REPAIRERS	21
519	MACHINERY MAINTENANCE OCCUPATIONS	1,226	123
544	MILLWRIGHTS	807
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	376
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,611
563	BRICKMASONS AND STONEMASONS	185
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	48
599	CONSTRUCTION TRADES, N.E.C.	32
633	SUPERVISORS, PRODUCTION OCCUPATIONS	112
637	MACHINISTS	1,418
643	BOILERMAKERS	40
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	245
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	58
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	345
719	MOLDING AND CASTING MACHINE OPERATORS	1,213	374
723	METAL PLATING MACHINE OPERATORS	189
755	EXTRUDING AND FORMING MACHINE OPERATORS	645	322
764	WASHING, CLEANING, AND PICKLING MACHINE OPERATORS	145
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	1,536
769	SLICING AND CUTTING MACHINE OPERATORS	782
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	769	38
779	MACHINE OPERATORS, NOT SPECIFIED	1,190	825
785	ASSEMBLERS	192
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	149	37
804	TRUCK DRIVERS, HEAVY	609
849	CRANE AND TOWER OPERATORS	313
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	914
869	CONSTRUCTION LABORERS	130
873	PRODUCTION HELPERS	712	171
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	2,603
889	LABORERS, EXCEPT CONSTRUCTION	1,229
TOTAL		33,850	2,012

*(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.