Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
044	AEROSPACE ENGINEERS	11
073	CHEMISTS, EXCEPT BIOCHEMISTS	103	8
224	CHEMICAL TECHNICIANS	73
225	SCIENCE TECHNICIANS, N.E.C.	432
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	710
453	JANITORS AND CLEANERS	967
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	176
563	BRICKMASONS AND STONEMASONS	313
575	ELECTRICIANS	82
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	144	12
597	STRUCTURAL METAL WORKERS	452
633	SUPERVISORS, PRODUCTION OCCUPATIONS	37
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	403
696	STATIONARY ENGINEERS	82
713	FORGING MACHINE OPERATORS	242
719	MOLDING AND CASTING MACHINE OPERATORS	1,408
724	HEAT TREATING EQUIPMENT OPERATORS	454
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	102
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	4,908	14
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	3,873	32
768	CRUSHING AND GRINDING MACHINE OPERATORS	477
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,907
779	MACHINE OPERATORS, NOT SPECIFIED	638
804	TRUCK DRIVERS, HEAVY	19
849	CRANE AND TOWER OPERATORS	368
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	77	8
865	HELPERS, CONSTRUCTION TRADES	288
873	PRODUCTION HELPERS	46
889	LABORERS, EXCEPT CONSTRUCTION	704	19
TOTAL		20,496	93

*(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.