Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
215	MECHANICAL ENGINEERING TECHNICIANS	27
224	CHEMICAL TECHNICIANS	44
365	STOCK AND INVENTORY CLERKS	114
453	JANITORS AND CLEANERS	4,051
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	9
508	AIRCRAFT ENGINE MECHANICS	795
515	AIRCRAFT MECHANICS, EXC. ENGINE	1,961
549	NOT SPECIFIED MECHANICS AND REPAIRERS	9	9
633	SUPERVISORS, PRODUCTION OCCUPATIONS	316	125
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	494
756	MIXING AND BLENDING MACHINE OPERATORS	330
779	MACHINE OPERATORS, NOT SPECIFIED	78
785	ASSEMBLERS	1,309	415
798	PRODUCTION SAMPLERS AND WEIGHERS	68
TOTAL		9,606	550

*(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.