Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
335	FILE CLERKS	225	45
365	STOCK AND INVENTORY CLERKS	488
453	JANITORS AND CLEANERS	21,122	263
505	AUTOMOBILE MECHANICS	685
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	4,744
508	AIRCRAFT ENGINE MECHANICS	2,806	199
515	AIRCRAFT MECHANICS, EXC. ENGINE	62
516	HEAVY EQUIPMENT MECHANICS	1,064
518	INDUSTRIAL MACHINERY REPAIRERS	2,107	18
519	MACHINERY MAINTENANCE OCCUPATIONS	866	7
533	MISCELLANEOUS ELECTRICAL AND ELECTRONIC EQUIPMENT REPAIRERS	22
538	OFFICE MACHINE REPAIRERS	723
544	MILLWRIGHTS	368
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	785
549	NOT SPECIFIED MECHANICS AND REPAIRERS	856
575	ELECTRICIANS	94
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	48
633	SUPERVISORS, PRODUCTION OCCUPATIONS	839
634	TOOL AND DIE MAKERS	461
637	MACHINISTS	15,427	17
687	BAKERS	120
707	ROLLING MACHINE OPERATORS	103
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	347
713	FORGING MACHINE OPERATORS	34
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	267
719	MOLDING AND CASTING MACHINE OPERATORS	1,899	1,890
734	PRINTING MACHINE OPERATORS	1,132
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	288
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	388
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	3,162
783	WELDERS AND CUTTERS	268
785	ASSEMBLERS	1,806	1,328
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	162
804	TRUCK DRIVERS, HEAVY	3
853	EXCAVATING AND LOADING MACHINE OPERATORS	2,541
855	GRADER, DOZER, AND SCRAPER OPERATORS	468
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	128	24
873	PRODUCTION HELPERS	347
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	115
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	6,446	1,098
889	LABORERS, EXCEPT CONSTRUCTION	6
TOTAL		73,821	4,889

*(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.