Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
053	CIVIL ENGINEERS	1,612
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	1,734	1,283
374	MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C.	491
446	HEALTH AIDES, EXCEPT NURSING	206	187
453	JANITORS AND CLEANERS	413
549	NOT SPECIFIED MECHANICS AND REPAIRERS	464
588	CONCRETE AND TERRAZZO FINISHERS	90
599	CONSTRUCTION TRADES, N.E.C.	155
637	MACHINISTS	4,179	1,614
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	190
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	308
719	MOLDING AND CASTING MACHINE OPERATORS	281	73
723	METAL PLATING MACHINE OPERATORS	521	72
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	734
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	1,482	741
753	CEMENTING AND GLUING MACHINE OPERATORS	303	24
756	MIXING AND BLENDING MACHINE OPERATORS	5,512	245
758	COMPRESSING AND COMPACTING MACHINE OPERATORS	909	636
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	414
765	FOLDING MACHINE OPERATORS	19
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,368	1,492
779	MACHINE OPERATORS, NOT SPECIFIED	768	309
785	ASSEMBLERS	4,209	727
794	HAND GRINDING AND POLISHING OCCUPATIONS	19	19
849	CRANE AND TOWER OPERATORS	386
869	CONSTRUCTION LABORERS	1,714	5
889	LABORERS, EXCEPT CONSTRUCTION	1,001	22
TOTAL		30,480	7,448

*(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.