Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	17	17
496	TIMBER CUTTING AND LOGGING OCCUPATIONS	397	227
567	CARPENTERS	397	227
677	OPTICAL GOODS WORKERS	168	151
695	POWER PLANT OPERATORS	101	67
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	587	486
768	CRUSHING AND GRINDING MACHINE OPERATORS	67	67
779	MACHINE OPERATORS, NOT SPECIFIED	402	335
878	MACHINE FEEDERS AND OFFBEARERS	235	201
TOTAL		2,370	1,778

*(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.