Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
103	PHYSICAL THERAPISTS	62	62
216	ENGINEERING TECHNICIANS, N.E.C.	981
453	JANITORS AND CLEANERS	504	67
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,146
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	2,550
756	MIXING AND BLENDING MACHINE OPERATORS	1,079
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,030
779	MACHINE OPERATORS, NOT SPECIFIED	5,884	2,697
TOTAL		13,236	2,826

*(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.