Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
055	ELECTRICAL AND ELECTRONIC ENGINEERS	5
365	STOCK AND INVENTORY CLERKS	94
453	JANITORS AND CLEANERS	2,939	234
519	MACHINERY MAINTENANCE OCCUPATIONS	1,250
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	80
539	MECHANICAL CONTROLS AND VALVE REPAIRERS	37
544	MILLWRIGHTS	27
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	19
549	NOT SPECIFIED MECHANICS AND REPAIRERS	470	4
575	ELECTRICIANS	43
637	MACHINISTS	829
696	STATIONARY ENGINEERS	23
739	KNITTING, LOOPING, TAPING, AND WEAVING MACHINE OPERATORS	2,284	1,077
743	TEXTILE CUTTING MACHINE OPERATORS	364
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	172
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	46
889	LABORERS, EXCEPT CONSTRUCTION	471
TOTAL		9,153	1,316

*(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.