Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
235	TECHNICIANS, N.E.C.	105	7
243	SUPERVISORS AND PROPRIETORS, SALES OCCUPATIONS	633	203
453	JANITORS AND CLEANERS	259
549	NOT SPECIFIED MECHANICS AND REPAIRERS	415
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	80
653	SHEET METAL WORKERS	574
678	DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS	1,581
719	MOLDING AND CASTING MACHINE OPERATORS	416	249
734	PRINTING MACHINE OPERATORS	379	28
756	MIXING AND BLENDING MACHINE OPERATORS	498	199
765	FOLDING MACHINE OPERATORS	710	651
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	517
785	ASSEMBLERS	916	511
TOTAL		7,082	1,849

*(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.