Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
223	BIOLOGICAL TECHNICIANS	375	150
436	COOKS, EXCEPT SHORT ORDER	33	33
453	JANITORS AND CLEANERS	350
633	SUPERVISORS, PRODUCTION OCCUPATIONS	500
637	MACHINISTS	250
754	PACKAGING AND FILLING MACHINE OPERATORS	500
888	HAND PACKERS AND PACKAGERS	2,251	2,251
TOTAL		4,259	2,433

*(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.