Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
059	ENGINEERS, N.E.C.	91
073	CHEMISTS, EXCEPT BIOCHEMISTS	1,769	493
075	GEOLOGISTS AND GEODESISTS	28
214	INDUSTRIAL ENGINEERING TECHNICIANS	14
216	ENGINEERING TECHNICIANS, N.E.C.	285
224	CHEMICAL TECHNICIANS	779	239
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	86
385	DATA-ENTRY KEYERS	722
417	FIREFIGHTING OCCUPATIONS	50
453	JANITORS AND CLEANERS	9,635	123
516	HEAVY EQUIPMENT MECHANICS	436
518	INDUSTRIAL MACHINERY REPAIRERS	340
519	MACHINERY MAINTENANCE OCCUPATIONS	22
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	63
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	835
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,159
567	CARPENTERS	57
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	44
593	INSULATION WORKERS	44
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,108	83
637	MACHINISTS	5,138
643	BOILERMAKERS	230
653	SHEET METAL WORKERS	75
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	531
695	POWER PLANT OPERATORS	891	28
696	STATIONARY ENGINEERS	2,847
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	1,186
705	MILLING AND PLANING MACHINE OPERATORS	3,010
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	429
719	MOLDING AND CASTING MACHINE OPERATORS	1,487	1,487
724	HEAT TREATING EQUIPMENT OPERATORS	17
727	SAWING MACHINE OPERATORS	84
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	921
756	MIXING AND BLENDING MACHINE OPERATORS	613	115
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	88
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	57
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	3,935
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	5,169	7
779	MACHINE OPERATORS, NOT SPECIFIED	9,790	339
783	WELDERS AND CUTTERS	35
785	ASSEMBLERS	4,985
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	9
804	TRUCK DRIVERS, HEAVY	204
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	622
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	746
869	CONSTRUCTION LABORERS	2,654
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	28
TOTAL		64,346	2,914

*(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.