Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	103
224	CHEMICAL TECHNICIANS	396	63
225	SCIENCE TECHNICIANS, N.E.C.	158
453	JANITORS AND CLEANERS	392
516	HEAVY EQUIPMENT MECHANICS	1,626
519	MACHINERY MAINTENANCE OCCUPATIONS	10
558	SUPERVISORS, N.E.C.	207
634	TOOL AND DIE MAKERS	253
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	182
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	168
719	MOLDING AND CASTING MACHINE OPERATORS	1,198
724	HEAT TREATING EQUIPMENT OPERATORS	313
734	PRINTING MACHINE OPERATORS	1,587
743	TEXTILE CUTTING MACHINE OPERATORS	171
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	827	79
753	CEMENTING AND GLUING MACHINE OPERATORS	171	171
755	EXTRUDING AND FORMING MACHINE OPERATORS	1,622	65
756	MIXING AND BLENDING MACHINE OPERATORS	1,350	65
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	2,909	57
769	SLICING AND CUTTING MACHINE OPERATORS	554	58
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	3,057	302
779	MACHINE OPERATORS, NOT SPECIFIED	4,011	1,108
785	ASSEMBLERS	2,974	229
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	425	167
869	CONSTRUCTION LABORERS	620
888	HAND PACKERS AND PACKAGERS	4,042	2,262
TOTAL		29,327	4,624

*(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.