Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
105	THERAPISTS, N.E.C.	219	219
216	ENGINEERING TECHNICIANS, N.E.C.	269	39
235	TECHNICIANS, N.E.C.	248
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	80
365	STOCK AND INVENTORY CLERKS	712
373	EXPEDITERS	69
453	JANITORS AND CLEANERS	14,738	55
486	GROUNDSKEEPERS AND GARDENERS, EXCEPT FARM	243
505	AUTOMOBILE MECHANICS	466
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	8,978	539
508	AIRCRAFT ENGINE MECHANICS	2,425	243
518	INDUSTRIAL MACHINERY REPAIRERS	2,843
519	MACHINERY MAINTENANCE OCCUPATIONS	101	31
544	MILLWRIGHTS	153
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	157
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,898	3
558	SUPERVISORS, N.E.C.	646
567	CARPENTERS	216
575	ELECTRICIANS	538
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	2,262	20
597	STRUCTURAL METAL WORKERS	7,403	141
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,077
634	TOOL AND DIE MAKERS	7,155	21
637	MACHINISTS	6,258	133
643	BOILERMAKERS	6,457	6
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	5
646	LAY-OUT WORKERS	319
653	SHEET METAL WORKERS	2,908	43
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	2,003
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	99
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	1,604	114
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	77
704	LATHE AND TURNING MACHINE OPERATORS	90
705	MILLING AND PLANING MACHINE OPERATORS	1,958
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	535
707	ROLLING MACHINE OPERATORS	32
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	8,589	417
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	14
717	FABRICATING MACHINE OPERATORS, N.E.C.	199	57
733	MISCELLANEOUS WOODWORKING MACHINE OPERATORS	465
755	EXTRUDING AND FORMING MACHINE OPERATORS	26
756	MIXING AND BLENDING MACHINE OPERATORS	64
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	3,241
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	127
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	1,986	31
768	CRUSHING AND GRINDING MACHINE OPERATORS	1,805
769	SLICING AND CUTTING MACHINE OPERATORS	1,391
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	882
779	MACHINE OPERATORS, NOT SPECIFIED	646
783	WELDERS AND CUTTERS	21,881	117
785	ASSEMBLERS	8,327	31
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	62
798	PRODUCTION SAMPLERS AND WEIGHERS	128
844	OPERATING ENGINEERS	3,219
849	CRANE AND TOWER OPERATORS	216
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	193
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	106
869	CONSTRUCTION LABORERS	4,390
873	PRODUCTION HELPERS	163
877	STOCK HANDLERS AND BAGGERS	77
889	LABORERS, EXCEPT CONSTRUCTION	3,612	454
TOTAL		138,048	2,712

*(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.