Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
019	MANAGERS AND ADMINISTRATORS, N.E.C.	69
055	ELECTRICAL AND ELECTRONIC ENGINEERS	5
224	CHEMICAL TECHNICIANS	88
374	MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C.	5
453	JANITORS AND CLEANERS	1,620
505	AUTOMOBILE MECHANICS	285
516	HEAVY EQUIPMENT MECHANICS	58
519	MACHINERY MAINTENANCE OCCUPATIONS	50
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	80
539	MECHANICAL CONTROLS AND VALVE REPAIRERS	37
544	MILLWRIGHTS	156
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	126
549	NOT SPECIFIED MECHANICS AND REPAIRERS	940
563	BRICKMASONS AND STONEMASONS	185
575	ELECTRICIANS	43
637	MACHINISTS	1,418
723	METAL PLATING MACHINE OPERATORS	189
744	TEXTILE SEWING MACHINE OPERATORS	2,217	2,217
756	MIXING AND BLENDING MACHINE OPERATORS	181
785	ASSEMBLERS	208
849	CRANE AND TOWER OPERATORS	27
TOTAL		7,987	2,217

*(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.