Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
365	STOCK AND INVENTORY CLERKS	58
453	JANITORS AND CLEANERS	117
454	ELEVATOR OPERATORS	363
633	SUPERVISORS, PRODUCTION OCCUPATIONS	175
754	PACKAGING AND FILLING MACHINE OPERATORS	58
763	ROASTING AND BAKING MACHINE OPERATORS, FOOD	117
768	CRUSHING AND GRINDING MACHINE OPERATORS	1,170
779	MACHINE OPERATORS, NOT SPECIFIED	2,606
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	175
878	MACHINE FEEDERS AND OFFBEARERS	58
888	HAND PACKERS AND PACKAGERS	725
TOTAL		5,624

*(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.