Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
335	FILE CLERKS	104
453	JANITORS AND CLEANERS	183
516	HEAVY EQUIPMENT MECHANICS	386
575	ELECTRICIANS	26
579	PAINTERS, CONSTRUCTION AND MAINTENANCE	1,280
588	CONCRETE AND TERRAZZO FINISHERS	90
593	INSULATION WORKERS	418
633	SUPERVISORS, PRODUCTION OCCUPATIONS	220
756	MIXING AND BLENDING MACHINE OPERATORS	470
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	257	43
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	660
869	CONSTRUCTION LABORERS	1,714	5
873	PRODUCTION HELPERS	576
888	HAND PACKERS AND PACKAGERS	940	78
TOTAL		7,323	126

*(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.