Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
215	MECHANICAL ENGINEERING TECHNICIANS	123
217	DRAFTING OCCUPATIONS	1,105
225	SCIENCE TECHNICIANS, N.E.C.	206	62
235	TECHNICIANS, N.E.C.	100
379	GENERAL OFFICE CLERKS	362
453	JANITORS AND CLEANERS	8,160	150
505	AUTOMOBILE MECHANICS	5,853
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	9,092
514	AUTOMOBILE BODY AND RELATED REPAIRERS	5,927
516	HEAVY EQUIPMENT MECHANICS	364
535	CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS	3,476
538	OFFICE MACHINE REPAIRERS	362
544	MILLWRIGHTS	3,565	84
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	2,526
549	NOT SPECIFIED MECHANICS AND REPAIRERS	534
575	ELECTRICIANS	2,330
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	7,861	17
597	STRUCTURAL METAL WORKERS	2,600
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,661
634	TOOL AND DIE MAKERS	273
637	MACHINISTS	1,163	150
643	BOILERMAKERS	34	6
646	LAY-OUT WORKERS	373
653	SHEET METAL WORKERS	2,408	6
689	INSPECTORS, TESTERS, AND GRADERS	38
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	275
724	HEAT TREATING EQUIPMENT OPERATORS	16	16
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	342
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,747
779	MACHINE OPERATORS, NOT SPECIFIED	907
783	WELDERS AND CUTTERS	58,375	479
784	SOLDERERS AND BRAZERS	8
785	ASSEMBLERS	13,000	288
793	HAND ENGRAVING AND PRINTING OCCUPATIONS	475
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	380
844	OPERATING ENGINEERS	1,668
849	CRANE AND TOWER OPERATORS	685
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	679
869	CONSTRUCTION LABORERS	392
873	PRODUCTION HELPERS	240
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	905
889	LABORERS, EXCEPT CONSTRUCTION	1,044
TOTAL		142,632	1,258

*(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.