Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	764	95
515	AIRCRAFT MECHANICS, EXC. ENGINE	567	21
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	18
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	82
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	45
779	MACHINE OPERATORS, NOT SPECIFIED	126
804	TRUCK DRIVERS, HEAVY	5
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	95
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	45
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	27
889	LABORERS, EXCEPT CONSTRUCTION	59
TOTAL		1,834	116

*(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.