Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
015	MANAGERS, MEDICINE AND HEALTH	9
019	MANAGERS AND ADMINISTRATORS, N.E.C.	671
048	CHEMICAL ENGINEERS	26
073	CHEMISTS, EXCEPT BIOCHEMISTS	1,067	315
084	PHYSICIANS	14	14
095	REGISTERED NURSES	215	207
098	INHALATION THERAPISTS	7,033	4,725
105	THERAPISTS, N.E.C.	231	157
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	1,130	775
208	HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C.	648	149
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	740	84
216	ENGINEERING TECHNICIANS, N.E.C.	506	21
224	CHEMICAL TECHNICIANS	1,290	324
225	SCIENCE TECHNICIANS, N.E.C.	594
235	TECHNICIANS, N.E.C.	1,002	112
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	693
446	HEALTH AIDES, EXCEPT NURSING	90	63
453	JANITORS AND CLEANERS	3,996
505	AUTOMOBILE MECHANICS	2,002
516	HEAVY EQUIPMENT MECHANICS	191
518	INDUSTRIAL MACHINERY REPAIRERS	93
535	CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS	26
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	795
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,418
563	BRICKMASONS AND STONEMASONS	1,224
567	CARPENTERS	620
575	ELECTRICIANS	108
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	45	3
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,555
637	MACHINISTS	168
717	FABRICATING MACHINE OPERATORS, N.E.C.	331	23
719	MOLDING AND CASTING MACHINE OPERATORS	2,188
723	METAL PLATING MACHINE OPERATORS	46	3
724	HEAT TREATING EQUIPMENT OPERATORS	495
754	PACKAGING AND FILLING MACHINE OPERATORS	772
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	3,952	79
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	3,713	253
774	PHOTOGRAPHIC PROCESS MACHINE OPERATORS	90	90
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	6,253	43
779	MACHINE OPERATORS, NOT SPECIFIED	3,314
783	WELDERS AND CUTTERS	443
804	TRUCK DRIVERS, HEAVY	3,292	69
844	OPERATING ENGINEERS	1,811
849	CRANE AND TOWER OPERATORS	1,539
853	EXCAVATING AND LOADING MACHINE OPERATORS	95
855	GRADER, DOZER, AND SCRAPER OPERATORS	143
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	185	62
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	870
869	CONSTRUCTION LABORERS	7,150	238
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	1,299	52
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	225
889	LABORERS, EXCEPT CONSTRUCTION	2,027
TOTAL		68,434	7,860

*(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.