Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	218	44
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	178
453	JANITORS AND CLEANERS	5,366	389
505	AUTOMOBILE MECHANICS	2,440
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	3,501
516	HEAVY EQUIPMENT MECHANICS	1,830
518	INDUSTRIAL MACHINERY REPAIRERS	860
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	159
549	NOT SPECIFIED MECHANICS AND REPAIRERS	889
575	ELECTRICIANS	579
633	SUPERVISORS, PRODUCTION OCCUPATIONS	134
637	MACHINISTS	1,123
719	MOLDING AND CASTING MACHINE OPERATORS	79	35
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	880
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	267	44
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	77	41
779	MACHINE OPERATORS, NOT SPECIFIED	835
783	WELDERS AND CUTTERS	210
785	ASSEMBLERS	928
789	HAND PAINTING, COATING, AND DECORATING OCCUPATIONS	660	587
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	178
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	578	445
878	MACHINE FEEDERS AND OFFBEARERS	311	178
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	89
TOTAL		22,370	1,763

*(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.