Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
045	METALLURGICAL AND MATERIALS ENGINEERS	16	5
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	14
637	MACHINISTS	3,542	273
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	87
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	284
769	SLICING AND CUTTING MACHINE OPERATORS	218
783	WELDERS AND CUTTERS	58
785	ASSEMBLERS	392
TOTAL		4,611	278

*(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.