Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
095	REGISTERED NURSES	31,630	25,466
103	PHYSICAL THERAPISTS	290	281
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	1,457	1,036
207	LICENSED PRACTICAL NURSES	629	629
224	CHEMICAL TECHNICIANS	48	29
303	SUPERVISORS, GENERAL OFFICE	836	717
365	STOCK AND INVENTORY CLERKS	52
446	HEALTH AIDES, EXCEPT NURSING	38	38
447	NURSING AIDES, ORDERLIES, AND ATTENDANTS	5,244	5,142
449	MAIDS AND HOUSEMEN	2,603	1,688
453	JANITORS AND CLEANERS	13,123	8,602
557	SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	3,250
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	40
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	500
TOTAL		59,739	43,626

*(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.