Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	581	290
223	BIOLOGICAL TECHNICIANS	188	113
235	TECHNICIANS, N.E.C.	28
323	INFORMATION CLERKS, N.E.C.	7	7
453	JANITORS AND CLEANERS	145
487	ANIMAL CARETAKERS, EXCEPT FARM	436	15
TOTAL		1,384	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.