Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	115	95
216	ENGINEERING TECHNICIANS, N.E.C.	198	86
453	JANITORS AND CLEANERS	151
458	HAIRDRESSERS AND COSMETOLOGISTS	28,575	22,491
599	CONSTRUCTION TRADES, N.E.C.	92
633	SUPERVISORS, PRODUCTION OCCUPATIONS	70
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	175
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	921
753	CEMENTING AND GLUING MACHINE OPERATORS	153
756	MIXING AND BLENDING MACHINE OPERATORS	2,063	158
TOTAL		32,513	22,831

*(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.