Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
059	ENGINEERS, N.E.C.	182
073	CHEMISTS, EXCEPT BIOCHEMISTS	96	32
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	17,319	8,562
216	ENGINEERING TECHNICIANS, N.E.C.	121
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	80
365	STOCK AND INVENTORY CLERKS	797	6
453	JANITORS AND CLEANERS	7,215	80
503	SUPERVISORS, MECHANICS AND REPAIRERS	65
508	AIRCRAFT ENGINE MECHANICS	2,920	199
514	AUTOMOBILE BODY AND RELATED REPAIRERS	561
516	HEAVY EQUIPMENT MECHANICS	216
518	INDUSTRIAL MACHINERY REPAIRERS	2,786
519	MACHINERY MAINTENANCE OCCUPATIONS	33
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	1,660
533	MISCELLANEOUS ELECTRICAL AND ELECTRONIC EQUIPMENT REPAIRERS	22
544	MILLWRIGHTS	300
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	711
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,002
558	SUPERVISORS, N.E.C.	646
563	BRICKMASONS AND STONEMASONS	2,457
575	ELECTRICIANS	619
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,106
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	3,815
597	STRUCTURAL METAL WORKERS	1,196
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,872
634	TOOL AND DIE MAKERS	11,897	21
635	TOOL AND DIE MAKER APPRENTICES	584
636	PRECISION ASSEMBLERS, METAL	847
637	MACHINISTS	17,233	126
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	2,639	52
653	SHEET METAL WORKERS	686
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	99
677	OPTICAL GOODS WORKERS	63
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	877
704	LATHE AND TURNING MACHINE OPERATORS	295
707	ROLLING MACHINE OPERATORS	32
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	8,513	510
717	FABRICATING MACHINE OPERATORS, N.E.C.	1,346
719	MOLDING AND CASTING MACHINE OPERATORS	95
724	HEAT TREATING EQUIPMENT OPERATORS	148
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	1,136	21
727	SAWING MACHINE OPERATORS	1,266	127
755	EXTRUDING AND FORMING MACHINE OPERATORS	824	549
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	69
768	CRUSHING AND GRINDING MACHINE OPERATORS	375
769	SLICING AND CUTTING MACHINE OPERATORS	212	206
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	932
779	MACHINE OPERATORS, NOT SPECIFIED	6,106	1,360
783	WELDERS AND CUTTERS	8,458	10
785	ASSEMBLERS	3,924	185
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	28
798	PRODUCTION SAMPLERS AND WEIGHERS	128
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	575
869	CONSTRUCTION LABORERS	1,938
873	PRODUCTION HELPERS	240
889	LABORERS, EXCEPT CONSTRUCTION	10,639	88
TOTAL		132,001	12,135

*(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.