Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	3
078	BIOLOGICAL AND LIFE SCIENTISTS	877	691
083	MEDICAL SCIENTISTS	108	95
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	7,723	6,178
216	ENGINEERING TECHNICIANS, N.E.C.	160	69
223	BIOLOGICAL TECHNICIANS	420	362
224	CHEMICAL TECHNICIANS	92
225	SCIENCE TECHNICIANS, N.E.C.	33
446	HEALTH AIDES, EXCEPT NURSING	1,104	810
453	JANITORS AND CLEANERS	127
458	HAIRDRESSERS AND COSMETOLOGISTS	44,899	35,043
519	MACHINERY MAINTENANCE OCCUPATIONS	22
549	NOT SPECIFIED MECHANICS AND REPAIRERS	967
567	CARPENTERS	57
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	44
593	INSULATION WORKERS	44
637	MACHINISTS	57
653	SHEET METAL WORKERS	75
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	66
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	114
756	MIXING AND BLENDING MACHINE OPERATORS	180
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	57
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	18
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	9
TOTAL		57,255	43,248

*(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.