Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	37
563	BRICKMASONS AND STONEMASONS	281
565	TILE SETTERS, HARD AND SOFT	4,131
704	LATHE AND TURNING MACHINE OPERATORS	8
705	MILLING AND PLANING MACHINE OPERATORS	12
756	MIXING AND BLENDING MACHINE OPERATORS	50
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	833	29
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	37
779	MACHINE OPERATORS, NOT SPECIFIED	8
889	LABORERS, EXCEPT CONSTRUCTION	15
TOTAL		5,412	29

*(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.