Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	129
215	MECHANICAL ENGINEERING TECHNICIANS	123
216	ENGINEERING TECHNICIANS, N.E.C.	508
235	TECHNICIANS, N.E.C.	248
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	154	31
365	STOCK AND INVENTORY CLERKS	1,389
453	JANITORS AND CLEANERS	8,015	371
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	343
508	AIRCRAFT ENGINE MECHANICS	2,988	199
515	AIRCRAFT MECHANICS, EXC. ENGINE	60
518	INDUSTRIAL MACHINERY REPAIRERS	943
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	193
549	NOT SPECIFIED MECHANICS AND REPAIRERS	884	3
567	CARPENTERS	143
575	ELECTRICIANS	334
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	5,329
595	ROOFERS	2,209
596	SHEETMETAL DUCT INSTALLERS	1,013
599	CONSTRUCTION TRADES, N.E.C.	746
633	SUPERVISORS, PRODUCTION OCCUPATIONS	2,227
634	TOOL AND DIE MAKERS	4,938	21
637	MACHINISTS	4,652
643	BOILERMAKERS	6,471
644	PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS	2,440	52
653	SHEET METAL WORKERS	2,558
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	733	147
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	99
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	77
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	14
704	LATHE AND TURNING MACHINE OPERATORS	4,542
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	8,655	294
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	2,652	1,326
719	MOLDING AND CASTING MACHINE OPERATORS	462	154
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	285
753	CEMENTING AND GLUING MACHINE OPERATORS	273	123
756	MIXING AND BLENDING MACHINE OPERATORS	199
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	3,241
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	1,837
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	3,880	31
768	CRUSHING AND GRINDING MACHINE OPERATORS	77
769	SLICING AND CUTTING MACHINE OPERATORS	54
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	31
779	MACHINE OPERATORS, NOT SPECIFIED	5,083	856
783	WELDERS AND CUTTERS	13,575	258
785	ASSEMBLERS	3,994
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	1,759	124
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	1,244
869	CONSTRUCTION LABORERS	33
877	STOCK HANDLERS AND BAGGERS	77
889	LABORERS, EXCEPT CONSTRUCTION	17
TOTAL		101,927	3,988

*(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.