Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	46
596	SHEETMETAL DUCT INSTALLERS	395	17
637	MACHINISTS	260	7
653	SHEET METAL WORKERS	641
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	1,133
704	LATHE AND TURNING MACHINE OPERATORS	1,450
707	ROLLING MACHINE OPERATORS	441
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	1,319	1,088
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,940
779	MACHINE OPERATORS, NOT SPECIFIED	382	269
783	WELDERS AND CUTTERS	83	3
TOTAL		8,090	1,385

*(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.