Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	30
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	8,809
567	CARPENTERS	12
575	ELECTRICIANS	7,047
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	7,047
589	GLAZIERS	2,873
679	BOOKBINDERS	1,042	651
696	STATIONARY ENGINEERS	16
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	32
713	FORGING MACHINE OPERATORS	271
734	PRINTING MACHINE OPERATORS	937	489
736	TYPESETTERS AND COMPOSITORS	586
753	CEMENTING AND GLUING MACHINE OPERATORS	35	35
755	EXTRUDING AND FORMING MACHINE OPERATORS	67	33
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	606	79
779	MACHINE OPERATORS, NOT SPECIFIED	2,611	2,520
785	ASSEMBLERS	2,266	1,342
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	651	326
888	HAND PACKERS AND PACKAGERS	121	121
TOTAL		35,063	5,597

*(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.