Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
223	BIOLOGICAL TECHNICIANS	232	116
225	SCIENCE TECHNICIANS, N.E.C.	206	159
444	MISCELLANEOUS FOOD PREPARATION OCCUPATIONS	736	736
453	JANITORS AND CLEANERS	441	48
633	SUPERVISORS, PRODUCTION OCCUPATIONS	333	333
686	BUTCHERS AND MEAT CUTTERS	865	430
754	PACKAGING AND FILLING MACHINE OPERATORS	549
756	MIXING AND BLENDING MACHINE OPERATORS	3,604	435
768	CRUSHING AND GRINDING MACHINE OPERATORS	1,992
769	SLICING AND CUTTING MACHINE OPERATORS	643	536
888	HAND PACKERS AND PACKAGERS	5,185	5,185
TOTAL		14,786	7,977

*(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.