Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	17
444	MISCELLANEOUS FOOD PREPARATION OCCUPATIONS	364
453	JANITORS AND CLEANERS	1,013	69
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	130
633	SUPERVISORS, PRODUCTION OCCUPATIONS	2,245	380
686	BUTCHERS AND MEAT CUTTERS	121
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	45
696	STATIONARY ENGINEERS	455
723	METAL PLATING MACHINE OPERATORS	24
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	577	531
756	MIXING AND BLENDING MACHINE OPERATORS	530	51
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	109
764	WASHING, CLEANING, AND PICKLING MACHINE OPERATORS	485
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	702
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,606	699
779	MACHINE OPERATORS, NOT SPECIFIED	2,027	697
785	ASSEMBLERS	249
795	MISCELLANEOUS HAND WORKING OCCUPATIONS	614	256
853	EXCAVATING AND LOADING MACHINE OPERATORS	1,760
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	1,077
889	LABORERS, EXCEPT CONSTRUCTION	5,448	950
TOTAL		19,597	3,633

*(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.