PRIMARY METAL INDUSTRIES (SIC 33)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	1,558
225	SCIENCE TECHNICIANS, N.E.C.	594
453	JANITORS AND CLEANERS	1,263
756	MIXING AND BLENDING MACHINE OPERATORS	223
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	5,193
873	PRODUCTION HELPERS	149
SUBTOTAL		8,980
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	387
756	MIXING AND BLENDING MACHINE OPERATORS	77
SUBTOTAL		464
TOTAL		9,444
RELATED PAGES: Estimates by SIC, Estimates by Occupation

*(1) The estimates for each occupation apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC where the agent was observed. Not all SICs were surveyed, and not all agents were observed in all surveyed SICs. (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.