Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
055	ELECTRICAL AND ELECTRONIC ENGINEERS	249
224	CHEMICAL TECHNICIANS	39
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	354	236
453	JANITORS AND CLEANERS	4,355	1,327
495	FORESTRY WORKERS, EXCEPT LOGGING	1,210
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	218
508	AIRCRAFT ENGINE MECHANICS	2,113
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	118
549	NOT SPECIFIED MECHANICS AND REPAIRERS	794	201
557	SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	3,250
575	ELECTRICIANS	4,259
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,816
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	65
599	CONSTRUCTION TRADES, N.E.C.	746
636	PRECISION ASSEMBLERS, METAL	1,119	947
637	MACHINISTS	779	172
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	1,643	164
733	MISCELLANEOUS WOODWORKING MACHINE OPERATORS	188
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	827	31
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	574	516
785	ASSEMBLERS	977	597
806	DRIVER-SALES WORKERS	335
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	2,036
888	HAND PACKERS AND PACKAGERS	83
889	LABORERS, EXCEPT CONSTRUCTION	24
TOTAL		30,170	4,192

*(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.