Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	153	22
224	CHEMICAL TECHNICIANS	175
379	GENERAL OFFICE CLERKS	69
453	JANITORS AND CLEANERS	1,654	80
515	AIRCRAFT MECHANICS, EXC. ENGINE	100
549	NOT SPECIFIED MECHANICS AND REPAIRERS	38
575	ELECTRICIANS	52
637	MACHINISTS	3,815	25
645	PATTERNMAKERS AND MODEL MAKERS, METAL	1,857
689	INSPECTORS, TESTERS, AND GRADERS	168
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	615	88
756	MIXING AND BLENDING MACHINE OPERATORS	609
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	142
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	46	3
779	MACHINE OPERATORS, NOT SPECIFIED	41	12
783	WELDERS AND CUTTERS	151
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	5,008	342
797	PRODUCTION TESTERS	501	81
889	LABORERS, EXCEPT CONSTRUCTION	787
TOTAL		15,980	654

*(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.