Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
379	GENERAL OFFICE CLERKS	65	65
453	JANITORS AND CLEANERS	452
486	GROUNDSKEEPERS AND GARDENERS, EXCEPT FARM	243
515	AIRCRAFT MECHANICS, EXC. ENGINE	178
516	HEAVY EQUIPMENT MECHANICS	156
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,223
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	52
723	METAL PLATING MACHINE OPERATORS	981
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	129
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	12
779	MACHINE OPERATORS, NOT SPECIFIED	1,668
783	WELDERS AND CUTTERS	3,438
785	ASSEMBLERS	389	15
853	EXCAVATING AND LOADING MACHINE OPERATORS	781
855	GRADER, DOZER, AND SCRAPER OPERATORS	468
TOTAL		10,233	80

*(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.