Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
223	BIOLOGICAL TECHNICIANS	686	300
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	2,574	386
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	257	43
779	MACHINE OPERATORS, NOT SPECIFIED	86
783	WELDERS AND CUTTERS	751
TOTAL		4,354	729

*(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.