Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
083	MEDICAL SCIENTISTS	46	46
223	BIOLOGICAL TECHNICIANS	933	406
368	WEIGHERS, MEASURERS, AND CHECKERS	332	142
453	JANITORS AND CLEANERS	377
686	BUTCHERS AND MEAT CUTTERS	3,292	118
754	PACKAGING AND FILLING MACHINE OPERATORS	1,660	211
756	MIXING AND BLENDING MACHINE OPERATORS	743	24
768	CRUSHING AND GRINDING MACHINE OPERATORS	958
769	SLICING AND CUTTING MACHINE OPERATORS	643	536
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,194	261
888	HAND PACKERS AND PACKAGERS	1,059	538
889	LABORERS, EXCEPT CONSTRUCTION	29
TOTAL		11,266	2,282

*(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.