Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
083	MEDICAL SCIENTISTS	46	46
223	BIOLOGICAL TECHNICIANS	730	319
225	SCIENCE TECHNICIANS, N.E.C.	377	179
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	352
453	JANITORS AND CLEANERS	457	248
487	ANIMAL CARETAKERS, EXCEPT FARM	258	86
633	SUPERVISORS, PRODUCTION OCCUPATIONS	353
754	PACKAGING AND FILLING MACHINE OPERATORS	456	46
756	MIXING AND BLENDING MACHINE OPERATORS	657
768	CRUSHING AND GRINDING MACHINE OPERATORS	2,105
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	274
779	MACHINE OPERATORS, NOT SPECIFIED	2,816
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	105
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	456
877	STOCK HANDLERS AND BAGGERS	469
TOTAL		9,910	924

*(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.