Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	887	584
075	GEOLOGISTS AND GEODESISTS	28
078	BIOLOGICAL AND LIFE SCIENTISTS	114	31
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	1,250	844
206	RADIOLOGIC TECHNICIANS	35	23
215	MECHANICAL ENGINEERING TECHNICIANS	58
216	ENGINEERING TECHNICIANS, N.E.C.	902	632
223	BIOLOGICAL TECHNICIANS	658	354
224	CHEMICAL TECHNICIANS	5,447	2,053
235	TECHNICIANS, N.E.C.	775	274
335	FILE CLERKS	149	30
446	HEALTH AIDES, EXCEPT NURSING	138	115
453	JANITORS AND CLEANERS	1,277
519	MACHINERY MAINTENANCE OCCUPATIONS	90
633	SUPERVISORS, PRODUCTION OCCUPATIONS	476	104
688	FOOD BATCHMAKERS	113
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	8
696	STATIONARY ENGINEERS	7
723	METAL PLATING MACHINE OPERATORS	12
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	110
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	504
783	WELDERS AND CUTTERS	751
785	ASSEMBLERS	377	141
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	887	222
797	PRODUCTION TESTERS	12
889	LABORERS, EXCEPT CONSTRUCTION	165	91
TOTAL		15,227	5,496

*(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.