Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	280
045	METALLURGICAL AND MATERIALS ENGINEERS	64
189	PHOTOGRAPHERS	227	142
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	55
216	ENGINEERING TECHNICIANS, N.E.C.	24
224	CHEMICAL TECHNICIANS	88
225	SCIENCE TECHNICIANS, N.E.C.	141
453	JANITORS AND CLEANERS	4,028	9
505	AUTOMOBILE MECHANICS	10,603
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	17
516	HEAVY EQUIPMENT MECHANICS	834
518	INDUSTRIAL MACHINERY REPAIRERS	21
519	MACHINERY MAINTENANCE OCCUPATIONS	27
544	MILLWRIGHTS	677
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	3,047
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,388
563	BRICKMASONS AND STONEMASONS	1,175
567	CARPENTERS	2,841
575	ELECTRICIANS	108
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	48
633	SUPERVISORS, PRODUCTION OCCUPATIONS	163
634	TOOL AND DIE MAKERS	614
637	MACHINISTS	6,784	17
643	BOILERMAKERS	40
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	213
719	MOLDING AND CASTING MACHINE OPERATORS	264
734	PRINTING MACHINE OPERATORS	57
755	EXTRUDING AND FORMING MACHINE OPERATORS	1,273
756	MIXING AND BLENDING MACHINE OPERATORS	176
769	SLICING AND CUTTING MACHINE OPERATORS	212
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	825
779	MACHINE OPERATORS, NOT SPECIFIED	1,922	336
785	ASSEMBLERS	1,598	65
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	1,597	1,369
804	TRUCK DRIVERS, HEAVY	1,813
825	RAILROAD BRAKE, SIGNAL, AND SWITCH OPERATORS	16
853	EXCAVATING AND LOADING MACHINE OPERATORS	762
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	1,942
873	PRODUCTION HELPERS	234
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	2,944
889	LABORERS, EXCEPT CONSTRUCTION	1,378	254
TOTAL		50,518	2,191

*(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.