Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	219
053	CIVIL ENGINEERS	1,612
059	ENGINEERS, N.E.C.	43
099	OCCUPATIONAL THERAPISTS	100	93
235	TECHNICIANS, N.E.C.	24
453	JANITORS AND CLEANERS	3,363	65
505	AUTOMOBILE MECHANICS	5,327
516	HEAVY EQUIPMENT MECHANICS	2,627
518	INDUSTRIAL MACHINERY REPAIRERS	529
519	MACHINERY MAINTENANCE OCCUPATIONS	300
539	MECHANICAL CONTROLS AND VALVE REPAIRERS	2,515
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	154
549	NOT SPECIFIED MECHANICS AND REPAIRERS	4,872
557	SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	3,250
558	SUPERVISORS, N.E.C.	14,655
563	BRICKMASONS AND STONEMASONS	16,987
565	TILE SETTERS, HARD AND SOFT	23,995
566	CARPET INSTALLERS	1,658
567	CARPENTERS	16,299
573	DRYWALL INSTALLERS	731
575	ELECTRICIANS	2,330
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	254
584	PLASTERERS	3
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	1,762
588	CONCRETE AND TERRAZZO FINISHERS	3,758
595	ROOFERS	11,177
597	STRUCTURAL METAL WORKERS	1,126
598	DRILLERS, EARTH	751
599	CONSTRUCTION TRADES, N.E.C.	3,058
613	SUPERVISORS, EXTRACTIVE OCCUPATIONS	335
614	DRILLERS, OIL WELL	5,362
617	MINING OCCUPATIONS, N.E.C.	8,044
633	SUPERVISORS, PRODUCTION OCCUPATIONS	410
634	TOOL AND DIE MAKERS	195
653	SHEET METAL WORKERS	103
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	232
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	190
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	181
704	LATHE AND TURNING MACHINE OPERATORS	5,098
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	275
707	ROLLING MACHINE OPERATORS	653
719	MOLDING AND CASTING MACHINE OPERATORS	152
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	135
733	MISCELLANEOUS WOODWORKING MACHINE OPERATORS	64
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	18
753	CEMENTING AND GLUING MACHINE OPERATORS	156
755	EXTRUDING AND FORMING MACHINE OPERATORS	254
756	MIXING AND BLENDING MACHINE OPERATORS	2,331
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	1,471
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	415
779	MACHINE OPERATORS, NOT SPECIFIED	5,296
783	WELDERS AND CUTTERS	650
785	ASSEMBLERS	443	139
795	MISCELLANEOUS HAND WORKING OCCUPATIONS	169
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	330
804	TRUCK DRIVERS, HEAVY	16,442
844	OPERATING ENGINEERS	2,949
848	HOIST AND WINCH OPERATORS	8,072
849	CRANE AND TOWER OPERATORS	413
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	473
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	402
865	HELPERS, CONSTRUCTION TRADES	1,343
869	CONSTRUCTION LABORERS	63,485	647
877	STOCK HANDLERS AND BAGGERS	179
889	LABORERS, EXCEPT CONSTRUCTION	3,296	136
TOTAL		253,493	1,080

*(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.