Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
048	CHEMICAL ENGINEERS	29
059	ENGINEERS, N.E.C.	43
073	CHEMISTS, EXCEPT BIOCHEMISTS	122	40
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	250	250
204	DENTAL HYGIENISTS	85	49
208	HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C.	24
216	ENGINEERING TECHNICIANS, N.E.C.	136
224	CHEMICAL TECHNICIANS	251	13
225	SCIENCE TECHNICIANS, N.E.C.	53
235	TECHNICIANS, N.E.C.	24
275	SALES COUNTER CLERKS	1,059
335	FILE CLERKS	109
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	876	96
453	JANITORS AND CLEANERS	10,197	63
505	AUTOMOBILE MECHANICS	17,442
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	2,463
508	AIRCRAFT ENGINE MECHANICS	3,100	199
515	AIRCRAFT MECHANICS, EXC. ENGINE	627	21
516	HEAVY EQUIPMENT MECHANICS	866
518	INDUSTRIAL MACHINERY REPAIRERS	625
519	MACHINERY MAINTENANCE OCCUPATIONS	22
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	3,199
535	CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS	32
544	MILLWRIGHTS	152
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	522
549	NOT SPECIFIED MECHANICS AND REPAIRERS	8,712
558	SUPERVISORS, N.E.C.	784
563	BRICKMASONS AND STONEMASONS	539
567	CARPENTERS	9,767
575	ELECTRICIANS	3,576
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,893	87
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	9,447
589	GLAZIERS	5,151
593	INSULATION WORKERS	1,068
595	ROOFERS	30,747
596	SHEETMETAL DUCT INSTALLERS	1,520
597	STRUCTURAL METAL WORKERS	288
599	CONSTRUCTION TRADES, N.E.C.	2,612
617	MINING OCCUPATIONS, N.E.C.	159
633	SUPERVISORS, PRODUCTION OCCUPATIONS	226
637	MACHINISTS	6,818	29
639	MACHINIST APPRENTICES	139
645	PATTERNMAKERS AND MODEL MAKERS, METAL	9
653	SHEET METAL WORKERS	4,146	28
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	232
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	190
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	788
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	49
695	POWER PLANT OPERATORS	20
696	STATIONARY ENGINEERS	17
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	653
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	1,330
707	ROLLING MACHINE OPERATORS	653
708	DRILLING AND BORING MACHINE OPERATORS	354
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	2,018	248
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	387
717	FABRICATING MACHINE OPERATORS, N.E.C.	174	59
724	HEAT TREATING EQUIPMENT OPERATORS	2,272
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	503	175
739	KNITTING, LOOPING, TAPING, AND WEAVING MACHINE OPERATORS	595
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	18
753	CEMENTING AND GLUING MACHINE OPERATORS	960	95
754	PACKAGING AND FILLING MACHINE OPERATORS	213
756	MIXING AND BLENDING MACHINE OPERATORS	1,345	120
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	809
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	738	43
765	FOLDING MACHINE OPERATORS	769	710
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	4,624
769	SLICING AND CUTTING MACHINE OPERATORS	1,365	165
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	6,658	257
779	MACHINE OPERATORS, NOT SPECIFIED	14,246	922
783	WELDERS AND CUTTERS	4,586
785	ASSEMBLERS	12,981	4,597
789	HAND PAINTING, COATING, AND DECORATING OCCUPATIONS	245	245
794	HAND GRINDING AND POLISHING OCCUPATIONS	159	159
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	1,229	1,032
805	TRUCK DRIVERS, LIGHT	3,176
844	OPERATING ENGINEERS	434
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	1,153
864	HELPERS, MECHANICS AND REPAIRERS	454
869	CONSTRUCTION LABORERS	15,284
873	PRODUCTION HELPERS	361
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	215
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	98
888	HAND PACKERS AND PACKAGERS	12
889	LABORERS, EXCEPT CONSTRUCTION	988	25
TOTAL		215,265	9,727

*(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.