Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
036	INSPECTORS AND COMPLIANCE OFFICERS, EXC. CONSTRUCTION	41
216	ENGINEERING TECHNICIANS, N.E.C.	40
224	CHEMICAL TECHNICIANS	205
365	STOCK AND INVENTORY CLERKS	20
368	WEIGHERS, MEASURERS, AND CHECKERS	62
453	JANITORS AND CLEANERS	1,375
505	AUTOMOBILE MECHANICS	123
516	HEAVY EQUIPMENT MECHANICS	258
518	INDUSTRIAL MACHINERY REPAIRERS	1,274
519	MACHINERY MAINTENANCE OCCUPATIONS	184	41
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	40
549	NOT SPECIFIED MECHANICS AND REPAIRERS	1,368
558	SUPERVISORS, N.E.C.	7,511
563	BRICKMASONS AND STONEMASONS	23,143
565	TILE SETTERS, HARD AND SOFT	12,861
567	CARPENTERS	2,708
575	ELECTRICIANS	327
584	PLASTERERS	6,283
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	1,043
588	CONCRETE AND TERRAZZO FINISHERS	3,755	34
593	INSULATION WORKERS	176
595	ROOFERS	5,584
599	CONSTRUCTION TRADES, N.E.C.	4,339
615	EXPLOSIVES WORKERS	246
617	MINING OCCUPATIONS, N.E.C.	159
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,733
634	TOOL AND DIE MAKERS	20
637	MACHINISTS	184
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	1,423
704	LATHE AND TURNING MACHINE OPERATORS	5,098
707	ROLLING MACHINE OPERATORS	708
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	28
713	FORGING MACHINE OPERATORS	40
719	MOLDING AND CASTING MACHINE OPERATORS	182
753	CEMENTING AND GLUING MACHINE OPERATORS	3,526
755	EXTRUDING AND FORMING MACHINE OPERATORS	809
756	MIXING AND BLENDING MACHINE OPERATORS	5,903
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	48
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	511
768	CRUSHING AND GRINDING MACHINE OPERATORS	287
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,221
779	MACHINE OPERATORS, NOT SPECIFIED	3,183
783	WELDERS AND CUTTERS	993
804	TRUCK DRIVERS, HEAVY	13,733
844	OPERATING ENGINEERS	2,978	181
849	CRANE AND TOWER OPERATORS	954
856	INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS	214
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	2,237	119
869	CONSTRUCTION LABORERS	73,587	1,302
878	MACHINE FEEDERS AND OFFBEARERS	383
883	FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C.	276
888	HAND PACKERS AND PACKAGERS	410
889	LABORERS, EXCEPT CONSTRUCTION	7,342
TOTAL		201,140	1,678

*(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.