Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
185	DESIGNERS	398	3
366	METER READERS	2,207
453	JANITORS AND CLEANERS	2,134	51
549	NOT SPECIFIED MECHANICS AND REPAIRERS	490	8
557	SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	3,250
637	MACHINISTS	3,317
696	STATIONARY ENGINEERS	5
755	EXTRUDING AND FORMING MACHINE OPERATORS	118	31
756	MIXING AND BLENDING MACHINE OPERATORS	39
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	686	18
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	3,178	1,651
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	573	390
888	HAND PACKERS AND PACKAGERS	254	82
889	LABORERS, EXCEPT CONSTRUCTION	289	106
TOTAL		16,937	2,340

*(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.