Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	10
216	ENGINEERING TECHNICIANS, N.E.C.	24	17
224	CHEMICAL TECHNICIANS	2,289	349
235	TECHNICIANS, N.E.C.	1,863	142
373	EXPEDITERS	69
453	JANITORS AND CLEANERS	520	27
633	SUPERVISORS, PRODUCTION OCCUPATIONS	103
637	MACHINISTS	13
677	OPTICAL GOODS WORKERS	2,740	1,180
689	INSPECTORS, TESTERS, AND GRADERS	168
695	POWER PLANT OPERATORS	101	67
704	LATHE AND TURNING MACHINE OPERATORS	168
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	1,142	637
723	METAL PLATING MACHINE OPERATORS	133
755	EXTRUDING AND FORMING MACHINE OPERATORS	405
756	MIXING AND BLENDING MACHINE OPERATORS	1,669
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	1,295	499
768	CRUSHING AND GRINDING MACHINE OPERATORS	1,043	252
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	539	223
779	MACHINE OPERATORS, NOT SPECIFIED	402	335
783	WELDERS AND CUTTERS	389
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	34
878	MACHINE FEEDERS AND OFFBEARERS	235	201
889	LABORERS, EXCEPT CONSTRUCTION	54
TOTAL		15,407	3,929

*(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.