Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	332	145
216	ENGINEERING TECHNICIANS, N.E.C.	173
225	SCIENCE TECHNICIANS, N.E.C.	124
235	TECHNICIANS, N.E.C.	88	59
453	JANITORS AND CLEANERS	186
614	DRILLERS, OIL WELL	5,004
633	SUPERVISORS, PRODUCTION OCCUPATIONS	93
677	OPTICAL GOODS WORKERS	42
756	MIXING AND BLENDING MACHINE OPERATORS	124
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	2,163	133
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	351	85
869	CONSTRUCTION LABORERS	1,714	5
878	MACHINE FEEDERS AND OFFBEARERS	6,492
888	HAND PACKERS AND PACKAGERS	342
TOTAL		17,230	428

*(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.