Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	740	84
216	ENGINEERING TECHNICIANS, N.E.C.	335	21
224	CHEMICAL TECHNICIANS	3,266	502
225	SCIENCE TECHNICIANS, N.E.C.	775	55
235	TECHNICIANS, N.E.C.	977	112
453	JANITORS AND CLEANERS	1,384	554
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	831
549	NOT SPECIFIED MECHANICS AND REPAIRERS	213
723	METAL PLATING MACHINE OPERATORS	32	21
735	PHOTOENGRAVERS AND LITHOGRAPHERS	1,026	91
754	PACKAGING AND FILLING MACHINE OPERATORS	5,427
756	MIXING AND BLENDING MACHINE OPERATORS	52	17
779	MACHINE OPERATORS, NOT SPECIFIED	70	52
785	ASSEMBLERS	86	38
873	PRODUCTION HELPERS	56	26
888	HAND PACKERS AND PACKAGERS	733
889	LABORERS, EXCEPT CONSTRUCTION	6,622	8
TOTAL		22,625	1,582

*(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.