Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
055	ELECTRICAL AND ELECTRONIC ENGINEERS	6,525
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	9
216	ENGINEERING TECHNICIANS, N.E.C.	2,291	87
224	CHEMICAL TECHNICIANS	1,433	179
235	TECHNICIANS, N.E.C.	899	62
365	STOCK AND INVENTORY CLERKS	429	427
453	JANITORS AND CLEANERS	6,294	389
505	AUTOMOBILE MECHANICS	4,683
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	4,201
508	AIRCRAFT ENGINE MECHANICS	3,079	199
514	AUTOMOBILE BODY AND RELATED REPAIRERS	5,989
515	AIRCRAFT MECHANICS, EXC. ENGINE	488
516	HEAVY EQUIPMENT MECHANICS	1,830
518	INDUSTRIAL MACHINERY REPAIRERS	1,342
519	MACHINERY MAINTENANCE OCCUPATIONS	90
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	59
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	763	85
549	NOT SPECIFIED MECHANICS AND REPAIRERS	3,434
558	SUPERVISORS, N.E.C.	904
563	BRICKMASONS AND STONEMASONS	544	79
567	CARPENTERS	1,027
575	ELECTRICIANS	1,510
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	318	297
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	153
588	CONCRETE AND TERRAZZO FINISHERS	589
596	SHEETMETAL DUCT INSTALLERS	395	17
633	SUPERVISORS, PRODUCTION OCCUPATIONS	437
637	MACHINISTS	2,524
653	SHEET METAL WORKERS	4,671	158
655	MISCELLANEOUS PRECISION METAL WORKERS	122
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	9
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	35
683	ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS	24	11
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	1,643	164
689	INSPECTORS, TESTERS, AND GRADERS	181	21
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	23
717	FABRICATING MACHINE OPERATORS, N.E.C.	57
719	MOLDING AND CASTING MACHINE OPERATORS	79	35
723	METAL PLATING MACHINE OPERATORS	434	19
753	CEMENTING AND GLUING MACHINE OPERATORS	765	582
755	EXTRUDING AND FORMING MACHINE OPERATORS	67	33
756	MIXING AND BLENDING MACHINE OPERATORS	34
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	3
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	158	30
779	MACHINE OPERATORS, NOT SPECIFIED	3,807	2,529
783	WELDERS AND CUTTERS	227
785	ASSEMBLERS	9,043	2,856
797	PRODUCTION TESTERS	68
798	PRODUCTION SAMPLERS AND WEIGHERS	68
869	CONSTRUCTION LABORERS	2,953
888	HAND PACKERS AND PACKAGERS	453	407
889	LABORERS, EXCEPT CONSTRUCTION	382
TOTAL		77,543	8,665

*(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.