Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
078	BIOLOGICAL AND LIFE SCIENTISTS	143	31
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	2,105	1,578
223	BIOLOGICAL TECHNICIANS	70	70
446	HEALTH AIDES, EXCEPT NURSING	1,064	745
TOTAL		3,383	2,424

*(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.