Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
215	MECHANICAL ENGINEERING TECHNICIANS	1,106	24
216	ENGINEERING TECHNICIANS, N.E.C.	15
224	CHEMICAL TECHNICIANS	1,433	179
365	STOCK AND INVENTORY CLERKS	109
389	ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C.	1,462
453	JANITORS AND CLEANERS	17,790	194
516	HEAVY EQUIPMENT MECHANICS	668
518	INDUSTRIAL MACHINERY REPAIRERS	471
519	MACHINERY MAINTENANCE OCCUPATIONS	90
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	294
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	3,405
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	5,890
549	NOT SPECIFIED MECHANICS AND REPAIRERS	9,629	31
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	48
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	9,860	93
597	STRUCTURAL METAL WORKERS	2,134
598	DRILLERS, EARTH	3,446
633	SUPERVISORS, PRODUCTION OCCUPATIONS	3,457	380
637	MACHINISTS	1,795
643	BOILERMAKERS	34	6
653	SHEET METAL WORKERS	3,708	49
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	1,328
703	LATHE AND TURNING MACHINE SET-UP OPERATORS	259
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	345
755	EXTRUDING AND FORMING MACHINE OPERATORS	704
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	86
779	MACHINE OPERATORS, NOT SPECIFIED	3,208	697
783	WELDERS AND CUTTERS	31,150	25
785	ASSEMBLERS	9,043	31
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	313
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	679
869	CONSTRUCTION LABORERS	2,067	5
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	1,077
889	LABORERS, EXCEPT CONSTRUCTION	16,001	1,038
TOTAL		133,102	2,751

*(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.