Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
035	CONSTRUCTION INSPECTORS	1,190
216	ENGINEERING TECHNICIANS, N.E.C.	874	593
224	CHEMICAL TECHNICIANS	421	43
225	SCIENCE TECHNICIANS, N.E.C.	380	44
235	TECHNICIANS, N.E.C.	26
343	COST AND RATE CLERKS	45
453	JANITORS AND CLEANERS	8,534
503	SUPERVISORS, MECHANICS AND REPAIRERS	217
505	AUTOMOBILE MECHANICS	45
508	AIRCRAFT ENGINE MECHANICS	28
515	AIRCRAFT MECHANICS, EXC. ENGINE	57
523	ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT	1,553
544	MILLWRIGHTS	21
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	1,066
549	NOT SPECIFIED MECHANICS AND REPAIRERS	246
577	ELECTRICAL POWER INSTALLERS AND REPAIRERS	3,106
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	2,619
637	MACHINISTS	631
643	BOILERMAKERS	6,423
653	SHEET METAL WORKERS	1,613	28
689	INSPECTORS, TESTERS, AND GRADERS	193
713	FORGING MACHINE OPERATORS	828
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	3,241
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	89
779	MACHINE OPERATORS, NOT SPECIFIED	4,029
783	WELDERS AND CUTTERS	5,328	6
785	ASSEMBLERS	8,870	1,466
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	1,957	71
797	PRODUCTION TESTERS	122	61
869	CONSTRUCTION LABORERS	79
TOTAL		53,832	2,313

*(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.