Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
056	INDUSTRIAL ENGINEERS	52
073	CHEMISTS, EXCEPT BIOCHEMISTS	103	8
216	ENGINEERING TECHNICIANS, N.E.C.	130
224	CHEMICAL TECHNICIANS	261
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	831
365	STOCK AND INVENTORY CLERKS	192
368	WEIGHERS, MEASURERS, AND CHECKERS	274
426	GUARDS AND POLICE, EXC. PUBLIC SERVICE	1,094
453	JANITORS AND CLEANERS	957
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	492
516	HEAVY EQUIPMENT MECHANICS	527
519	MACHINERY MAINTENANCE OCCUPATIONS	3
535	CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS	9
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	1,056
549	NOT SPECIFIED MECHANICS AND REPAIRERS	517
563	BRICKMASONS AND STONEMASONS	123
567	CARPENTERS	62
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	157
634	TOOL AND DIE MAKERS	320
637	MACHINISTS	3,383
643	BOILERMAKERS	241
655	MISCELLANEOUS PRECISION METAL WORKERS	123
695	POWER PLANT OPERATORS	59	14
696	STATIONARY ENGINEERS	132
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	661
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	41
713	FORGING MACHINE OPERATORS	695
719	MOLDING AND CASTING MACHINE OPERATORS	62
723	METAL PLATING MACHINE OPERATORS	91
724	HEAT TREATING EQUIPMENT OPERATORS	128
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	52	17
763	ROASTING AND BAKING MACHINE OPERATORS, FOOD	864	29
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	698
769	SLICING AND CUTTING MACHINE OPERATORS	164
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,188
779	MACHINE OPERATORS, NOT SPECIFIED	24	8
783	WELDERS AND CUTTERS	488
785	ASSEMBLERS	58
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	6
804	TRUCK DRIVERS, HEAVY	5,593
824	LOCOMOTIVE OPERATING OCCUPATIONS	1,293
825	RAILROAD BRAKE, SIGNAL, AND SWITCH OPERATORS	2,931	65
844	OPERATING ENGINEERS	2,718
849	CRANE AND TOWER OPERATORS	79
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	952
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	247
865	HELPERS, CONSTRUCTION TRADES	288
873	PRODUCTION HELPERS	269
876	STEVEDORES	2,598
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	162
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	4,542
889	LABORERS, EXCEPT CONSTRUCTION	85
TOTAL		39,074	142

*(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.