Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	1,924	1,441
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	610	44
453	JANITORS AND CLEANERS	503	10
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	9	5
779	MACHINE OPERATORS, NOT SPECIFIED	19	19
783	WELDERS AND CUTTERS	381
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	256	207
TOTAL		3,702	1,725

*(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.