Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
223	BIOLOGICAL TECHNICIANS	88	88
686	BUTCHERS AND MEAT CUTTERS	414	280
754	PACKAGING AND FILLING MACHINE OPERATORS	789	351
756	MIXING AND BLENDING MACHINE OPERATORS	2,653	435
889	LABORERS, EXCEPT CONSTRUCTION	175
TOTAL		4,120	1,153

*(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.