Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	14
365	STOCK AND INVENTORY CLERKS	43
453	JANITORS AND CLEANERS	798	54
633	SUPERVISORS, PRODUCTION OCCUPATIONS	3
637	MACHINISTS	4,693
695	POWER PLANT OPERATORS	415
696	STATIONARY ENGINEERS	533
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	8
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	1,112	27
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,211	27
TOTAL		9,829	108

*(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.