Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
086	VETERINARIANS	1,472	294
453	JANITORS AND CLEANERS	7,371
496	TIMBER CUTTING AND LOGGING OCCUPATIONS	397	227
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	23
567	CARPENTERS	397	227
595	ROOFERS	2,209
676	PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS	190
733	MISCELLANEOUS WOODWORKING MACHINE OPERATORS	283
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	1,708
779	MACHINE OPERATORS, NOT SPECIFIED	5,593
783	WELDERS AND CUTTERS	35
TOTAL		19,678	748

*(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.