Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	408	85
096	PHARMACISTS	82	14
103	PHYSICAL THERAPISTS	122	122
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	200	80
216	ENGINEERING TECHNICIANS, N.E.C.	41	21
223	BIOLOGICAL TECHNICIANS	492	227
224	CHEMICAL TECHNICIANS	1,822	272
225	SCIENCE TECHNICIANS, N.E.C.	185	12
335	FILE CLERKS	149	30
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	51
448	SUPERVISORS, CLEANING AND BUILDING SERVICE WORKERS	28
453	JANITORS AND CLEANERS	16,199	5,746
696	STATIONARY ENGINEERS	282
723	METAL PLATING MACHINE OPERATORS	115	23
756	MIXING AND BLENDING MACHINE OPERATORS	105
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	347	8
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	145	37
779	MACHINE OPERATORS, NOT SPECIFIED	19	6
785	ASSEMBLERS	174
889	LABORERS, EXCEPT CONSTRUCTION	123
TOTAL		21,090	6,683

*(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.