Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
078	BIOLOGICAL AND LIFE SCIENTISTS	76	76
083	MEDICAL SCIENTISTS	111	76
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	3,543	2,928
216	ENGINEERING TECHNICIANS, N.E.C.	1,091	996
224	CHEMICAL TECHNICIANS	2,477	356
235	TECHNICIANS, N.E.C.	76
379	GENERAL OFFICE CLERKS	175
446	HEALTH AIDES, EXCEPT NURSING	947	720
453	JANITORS AND CLEANERS	1,442	53
519	MACHINERY MAINTENANCE OCCUPATIONS	212
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	181	62
633	SUPERVISORS, PRODUCTION OCCUPATIONS	205
719	MOLDING AND CASTING MACHINE OPERATORS	32
734	PRINTING MACHINE OPERATORS	13,455
735	PHOTOENGRAVERS AND LITHOGRAPHERS	582
737	MISCELLANEOUS PRINTING MACHINE OPERATORS	768
744	TEXTILE SEWING MACHINE OPERATORS	266
756	MIXING AND BLENDING MACHINE OPERATORS	1,562
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	228
798	PRODUCTION SAMPLERS AND WEIGHERS	819
873	PRODUCTION HELPERS	1,695	363
878	MACHINE FEEDERS AND OFFBEARERS	32	5
TOTAL		29,975	5,636

*(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.