Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
508	AIRCRAFT ENGINE MECHANICS	6,707	57
518	INDUSTRIAL MACHINERY REPAIRERS	114
633	SUPERVISORS, PRODUCTION OCCUPATIONS	194
637	MACHINISTS	1,085
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	504	194
769	SLICING AND CUTTING MACHINE OPERATORS	39
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	775
779	MACHINE OPERATORS, NOT SPECIFIED	78
TOTAL		9,494	251

*(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.