Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	20
078	BIOLOGICAL AND LIFE SCIENTISTS	1,246	664
083	MEDICAL SCIENTISTS	193	169
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	5,585	4,346
216	ENGINEERING TECHNICIANS, N.E.C.	7
223	BIOLOGICAL TECHNICIANS	1,197	925
225	SCIENCE TECHNICIANS, N.E.C.	50	50
446	HEALTH AIDES, EXCEPT NURSING	753	532
453	JANITORS AND CLEANERS	494
754	PACKAGING AND FILLING MACHINE OPERATORS	13
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	3
TOTAL		9,561	6,685

*(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.