Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
224	CHEMICAL TECHNICIANS	3	3
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	55
366	METER READERS	2,207
453	JANITORS AND CLEANERS	5,539	3
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	640
518	INDUSTRIAL MACHINERY REPAIRERS	268
519	MACHINERY MAINTENANCE OCCUPATIONS	71
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	220
549	NOT SPECIFIED MECHANICS AND REPAIRERS	896	14
557	SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	3,250
575	ELECTRICIANS	34
634	TOOL AND DIE MAKERS	296
637	MACHINISTS	229
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	205
695	POWER PLANT OPERATORS	96
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	14
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	595	3
734	PRINTING MACHINE OPERATORS	161
739	KNITTING, LOOPING, TAPING, AND WEAVING MACHINE OPERATORS	2,318	382
769	SLICING AND CUTTING MACHINE OPERATORS	127
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,865
779	MACHINE OPERATORS, NOT SPECIFIED	288	21
797	PRODUCTION TESTERS	68
844	OPERATING ENGINEERS	359
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	3
873	PRODUCTION HELPERS	3
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	684
889	LABORERS, EXCEPT CONSTRUCTION	298	106
TOTAL		20,791	532

*(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.