Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	595
075	GEOLOGISTS AND GEODESISTS	28
223	BIOLOGICAL TECHNICIANS	686	300
224	CHEMICAL TECHNICIANS	675	120
225	SCIENCE TECHNICIANS, N.E.C.	158
335	FILE CLERKS	104
365	STOCK AND INVENTORY CLERKS	427	427
385	DATA-ENTRY KEYERS	722
453	JANITORS AND CLEANERS	581
508	AIRCRAFT ENGINE MECHANICS	6,707	57
514	AUTOMOBILE BODY AND RELATED REPAIRERS	427
515	AIRCRAFT MECHANICS, EXC. ENGINE	1,074
516	HEAVY EQUIPMENT MECHANICS	436
519	MACHINERY MAINTENANCE OCCUPATIONS	22
549	NOT SPECIFIED MECHANICS AND REPAIRERS	493
567	CARPENTERS	57
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	1,006	445
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	44
593	INSULATION WORKERS	44
637	MACHINISTS	174
645	PATTERNMAKERS AND MODEL MAKERS, METAL	1,857
653	SHEET METAL WORKERS	75
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	66
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	79
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	9
719	MOLDING AND CASTING MACHINE OPERATORS	375
723	METAL PLATING MACHINE OPERATORS	6	3
756	MIXING AND BLENDING MACHINE OPERATORS	126
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	2,574	386
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	1,943	131
768	CRUSHING AND GRINDING MACHINE OPERATORS	55	29
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,089
779	MACHINE OPERATORS, NOT SPECIFIED	86
783	WELDERS AND CUTTERS	751
785	ASSEMBLERS	256
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	9
804	TRUCK DRIVERS, HEAVY	204
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	43
869	CONSTRUCTION LABORERS	2,654
878	MACHINE FEEDERS AND OFFBEARERS	108
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	515	103
889	LABORERS, EXCEPT CONSTRUCTION	541
TOTAL		28,879	2,001

*(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.