Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
075	GEOLOGISTS AND GEODESISTS	28
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	14	7
216	ENGINEERING TECHNICIANS, N.E.C.	138
224	CHEMICAL TECHNICIANS	517	239
225	SCIENCE TECHNICIANS, N.E.C.	29
235	TECHNICIANS, N.E.C.	16	5
446	HEALTH AIDES, EXCEPT NURSING	83	83
453	JANITORS AND CLEANERS	1,396
677	OPTICAL GOODS WORKERS	7	7
696	STATIONARY ENGINEERS	42
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	98
774	PHOTOGRAPHIC PROCESS MACHINE OPERATORS	17
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	5
779	MACHINE OPERATORS, NOT SPECIFIED	5,593
TOTAL		7,983	341

*(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.