Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
048	CHEMICAL ENGINEERS	7	2
185	DESIGNERS	25
235	TECHNICIANS, N.E.C.	177	88
453	JANITORS AND CLEANERS	313
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	134
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	121
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	2
645	PATTERNMAKERS AND MODEL MAKERS, METAL	139
723	METAL PLATING MACHINE OPERATORS	7	2
735	PHOTOENGRAVERS AND LITHOGRAPHERS	1,190	335
754	PACKAGING AND FILLING MACHINE OPERATORS	729	545
779	MACHINE OPERATORS, NOT SPECIFIED	324	197
785	ASSEMBLERS	14	11
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	495	185
TOTAL		3,677	1,367

*(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.