Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
269	SALES WORKERS, PARTS	2,455
453	JANITORS AND CLEANERS	1,413	3
505	AUTOMOBILE MECHANICS	365
516	HEAVY EQUIPMENT MECHANICS	818
518	INDUSTRIAL MACHINERY REPAIRERS	268
519	MACHINERY MAINTENANCE OCCUPATIONS	109
549	NOT SPECIFIED MECHANICS AND REPAIRERS	769	7
634	TOOL AND DIE MAKERS	33
637	MACHINISTS	6,844	17
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	77
695	POWER PLANT OPERATORS	96
704	LATHE AND TURNING MACHINE OPERATORS	29
705	MILLING AND PLANING MACHINE OPERATORS	21
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	652	42
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	99
719	MOLDING AND CASTING MACHINE OPERATORS	24
734	PRINTING MACHINE OPERATORS	1,132
768	CRUSHING AND GRINDING MACHINE OPERATORS	452	49
769	SLICING AND CUTTING MACHINE OPERATORS	522	31
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	58
779	MACHINE OPERATORS, NOT SPECIFIED	92	5
783	WELDERS AND CUTTERS	540	31
785	ASSEMBLERS	1,052	322
844	OPERATING ENGINEERS	488
853	EXCAVATING AND LOADING MACHINE OPERATORS	1,760
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	3
869	CONSTRUCTION LABORERS	3,312
889	LABORERS, EXCEPT CONSTRUCTION	21
TOTAL		23,502	508

*(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.