Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
095	REGISTERED NURSES	1,695	1,695
207	LICENSED PRACTICAL NURSES	487	487
216	ENGINEERING TECHNICIANS, N.E.C.	312
224	CHEMICAL TECHNICIANS	158	25
225	SCIENCE TECHNICIANS, N.E.C.	141
335	FILE CLERKS	1,541	1,078
345	DUPLICATING MACHINE OPERATORS	795	568
365	STOCK AND INVENTORY CLERKS	446	13
453	JANITORS AND CLEANERS	1,966
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	14,208
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	17
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,158	77
575	ELECTRICIANS	145
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	21,988	323
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,778	104
643	BOILERMAKERS	6,423
645	PATTERNMAKERS AND MODEL MAKERS, METAL	1,193	852
649	ENGRAVERS, METAL	67	67
657	CABINET MAKERS AND BENCH CARPENTERS	526
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	18	18
696	STATIONARY ENGINEERS	535
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	132
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	31
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	45	45
717	FABRICATING MACHINE OPERATORS, N.E.C.	63	13
719	MOLDING AND CASTING MACHINE OPERATORS	31,675	23,197
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	68	34
728	SHAPING AND JOINING MACHINE OPERATORS	65	43
755	EXTRUDING AND FORMING MACHINE OPERATORS	8,144	4,126
756	MIXING AND BLENDING MACHINE OPERATORS	309	191
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	3,241
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	52
768	CRUSHING AND GRINDING MACHINE OPERATORS	56	6
769	SLICING AND CUTTING MACHINE OPERATORS	34	34
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	6,026	4,723
779	MACHINE OPERATORS, NOT SPECIFIED	1,381	378
785	ASSEMBLERS	7,292	4,032
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	273
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	289
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	2,222
878	MACHINE FEEDERS AND OFFBEARERS	382	287
889	LABORERS, EXCEPT CONSTRUCTION	1,273	236
TOTAL		119,649	42,653

*(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.