Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	293
216	ENGINEERING TECHNICIANS, N.E.C.	753
225	SCIENCE TECHNICIANS, N.E.C.	189	105
453	JANITORS AND CLEANERS	2,205
479	FARM WORKERS	1,355
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	279
754	PACKAGING AND FILLING MACHINE OPERATORS	827	276
756	MIXING AND BLENDING MACHINE OPERATORS	509
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	14
768	CRUSHING AND GRINDING MACHINE OPERATORS	301
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	140
779	MACHINE OPERATORS, NOT SPECIFIED	1,205
877	STOCK HANDLERS AND BAGGERS	138
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	1,205
888	HAND PACKERS AND PACKAGERS	151
889	LABORERS, EXCEPT CONSTRUCTION	138
TOTAL		9,701	380

*(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.