Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
059	ENGINEERS, N.E.C.	23
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	17
206	RADIOLOGIC TECHNICIANS	836	715
224	CHEMICAL TECHNICIANS	980	156
235	TECHNICIANS, N.E.C.	922	839
327	ORDER CLERKS	189	139
357	MESSENGERS	278
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	3,039	205
453	JANITORS AND CLEANERS	1,865
503	SUPERVISORS, MECHANICS AND REPAIRERS	9
516	HEAVY EQUIPMENT MECHANICS	377
518	INDUSTRIAL MACHINERY REPAIRERS	596
519	MACHINERY MAINTENANCE OCCUPATIONS	314
544	MILLWRIGHTS	371
549	NOT SPECIFIED MECHANICS AND REPAIRERS	710	14
567	CARPENTERS	1,671	227
575	ELECTRICIANS	3,356
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	318	297
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	578
593	INSULATION WORKERS	750
595	ROOFERS	7,117
633	SUPERVISORS, PRODUCTION OCCUPATIONS	243	52
653	SHEET METAL WORKERS	88
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	156
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	123
678	DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS	21
683	ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS	31
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	9
717	FABRICATING MACHINE OPERATORS, N.E.C.	369	295
719	MOLDING AND CASTING MACHINE OPERATORS	2,765	504
723	METAL PLATING MACHINE OPERATORS	43
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	286
727	SAWING MACHINE OPERATORS	104	14
753	CEMENTING AND GLUING MACHINE OPERATORS	1,330	597
756	MIXING AND BLENDING MACHINE OPERATORS	314	76
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	671	31
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	97
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	6,297	709
779	MACHINE OPERATORS, NOT SPECIFIED	130	49
783	WELDERS AND CUTTERS	102
785	ASSEMBLERS	1,048	331
804	TRUCK DRIVERS, HEAVY	19
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	127	7
869	CONSTRUCTION LABORERS	1,714	5
873	PRODUCTION HELPERS	15	15
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	20
888	HAND PACKERS AND PACKAGERS	2,299	620
889	LABORERS, EXCEPT CONSTRUCTION	2,970	352
TOTAL		45,703	6,250

*(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.