Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	17
365	STOCK AND INVENTORY CLERKS	310
453	JANITORS AND CLEANERS	1,899
503	SUPERVISORS, MECHANICS AND REPAIRERS	2,429
637	MACHINISTS	436	29
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	675	56
704	LATHE AND TURNING MACHINE OPERATORS	359
705	MILLING AND PLANING MACHINE OPERATORS	180	36
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	3,790	611
724	HEAT TREATING EQUIPMENT OPERATORS	353
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	108
779	MACHINE OPERATORS, NOT SPECIFIED	15,956	4,352
785	ASSEMBLERS	6,007
TOTAL		32,519	5,084

*(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.