Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	108
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	587	69
453	JANITORS AND CLEANERS	12,866	79
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	382
516	HEAVY EQUIPMENT MECHANICS	1,080
519	MACHINERY MAINTENANCE OCCUPATIONS	380
544	MILLWRIGHTS	269
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	655
549	NOT SPECIFIED MECHANICS AND REPAIRERS	985
558	SUPERVISORS, N.E.C.	385
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	166
633	SUPERVISORS, PRODUCTION OCCUPATIONS	288
637	MACHINISTS	6,309	110
653	SHEET METAL WORKERS	1,948
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	675	56
696	STATIONARY ENGINEERS	920
704	LATHE AND TURNING MACHINE OPERATORS	563
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	901	281
707	ROLLING MACHINE OPERATORS	1,898
719	MOLDING AND CASTING MACHINE OPERATORS	840	476
734	PRINTING MACHINE OPERATORS	285
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	568
769	SLICING AND CUTTING MACHINE OPERATORS	285
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,165	27
779	MACHINE OPERATORS, NOT SPECIFIED	3,590
783	WELDERS AND CUTTERS	921
785	ASSEMBLERS	5,830
804	TRUCK DRIVERS, HEAVY	4,779
844	OPERATING ENGINEERS	1,310
864	HELPERS, MECHANICS AND REPAIRERS	19
869	CONSTRUCTION LABORERS	770
878	MACHINE FEEDERS AND OFFBEARERS	108
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	190
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	78
TOTAL		53,104	1,098

*(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.