Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	141
078	BIOLOGICAL AND LIFE SCIENTISTS	89	89
235	TECHNICIANS, N.E.C.	89
453	JANITORS AND CLEANERS	565	71
455	PEST CONTROL OCCUPATIONS	3,738	574
487	ANIMAL CARETAKERS, EXCEPT FARM	473	86
539	MECHANICAL CONTROLS AND VALVE REPAIRERS	2,515
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	357
754	PACKAGING AND FILLING MACHINE OPERATORS	804
756	MIXING AND BLENDING MACHINE OPERATORS	182
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	357
TOTAL		9,311	820

*(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.