Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
045	METALLURGICAL AND MATERIALS ENGINEERS	16	5
069	PHYSICISTS AND ASTRONOMERS	1,354	829
073	CHEMISTS, EXCEPT BIOCHEMISTS	7
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	1,358	956
208	HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C.	1,625	1,134
216	ENGINEERING TECHNICIANS, N.E.C.	448
224	CHEMICAL TECHNICIANS	621	144
453	JANITORS AND CLEANERS	306
633	SUPERVISORS, PRODUCTION OCCUPATIONS	25
756	MIXING AND BLENDING MACHINE OPERATORS	76
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	72
785	ASSEMBLERS	443	139
889	LABORERS, EXCEPT CONSTRUCTION	988	25
TOTAL		7,340	3,232

*(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.