Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	404	400
259	SALES REPRESENTATIVES, MINING, MANUFACTURING, AND WHOLESALE	1,649	733
634	TOOL AND DIE MAKERS	407
647	PRECIOUS STONES AND METALS WORKERS (JEWELERS)	183
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	183
723	METAL PLATING MACHINE OPERATORS	359	31
756	MIXING AND BLENDING MACHINE OPERATORS	7
873	PRODUCTION HELPERS	24
TOTAL		3,216	1,164

*(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.