Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	212
216	ENGINEERING TECHNICIANS, N.E.C.	381
224	CHEMICAL TECHNICIANS	1,267	216
453	JANITORS AND CLEANERS	96
505	AUTOMOBILE MECHANICS	302
518	INDUSTRIAL MACHINERY REPAIRERS	278
549	NOT SPECIFIED MECHANICS AND REPAIRERS	40
637	MACHINISTS	1,765
677	OPTICAL GOODS WORKERS	221	165
754	PACKAGING AND FILLING MACHINE OPERATORS	827	276
756	MIXING AND BLENDING MACHINE OPERATORS	358
779	MACHINE OPERATORS, NOT SPECIFIED	1,368	288
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	360
877	STOCK HANDLERS AND BAGGERS	138
889	LABORERS, EXCEPT CONSTRUCTION	265
TOTAL		7,879	945

*(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.