Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	190	57
224	CHEMICAL TECHNICIANS	285	76
225	SCIENCE TECHNICIANS, N.E.C.	313	313
453	JANITORS AND CLEANERS	7,221
516	HEAVY EQUIPMENT MECHANICS	100
533	MISCELLANEOUS ELECTRICAL AND ELECTRONIC EQUIPMENT REPAIRERS	5,365
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	19
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	618
549	NOT SPECIFIED MECHANICS AND REPAIRERS	2,099	77
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	6,166
633	SUPERVISORS, PRODUCTION OCCUPATIONS	53
653	SHEET METAL WORKERS	2,286
754	PACKAGING AND FILLING MACHINE OPERATORS	89
756	MIXING AND BLENDING MACHINE OPERATORS	1,058	38
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	268
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	2,671	43
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,228	38
783	WELDERS AND CUTTERS	2,402
785	ASSEMBLERS	437
789	HAND PAINTING, COATING, AND DECORATING OCCUPATIONS	3,324
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	268
888	HAND PACKERS AND PACKAGERS	1,789	1,789
889	LABORERS, EXCEPT CONSTRUCTION	19
TOTAL		38,267	2,430

*(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.