Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	7
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	293
216	ENGINEERING TECHNICIANS, N.E.C.	395	126
225	SCIENCE TECHNICIANS, N.E.C.	189	105
235	TECHNICIANS, N.E.C.	798	426
453	JANITORS AND CLEANERS	191
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	279
677	OPTICAL GOODS WORKERS	42
695	POWER PLANT OPERATORS	8
756	MIXING AND BLENDING MACHINE OPERATORS	3
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	14
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	572	141
TOTAL		2,791	798

*(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.