Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
319	RECEPTIONISTS	876	526
453	JANITORS AND CLEANERS	2,991
458	HAIRDRESSERS AND COSMETOLOGISTS	2,629	1,052
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	61
549	NOT SPECIFIED MECHANICS AND REPAIRERS	68
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	58
637	MACHINISTS	2,612
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	121
707	ROLLING MACHINE OPERATORS	500	48
727	SAWING MACHINE OPERATORS	425	283
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	55
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	2,276
783	WELDERS AND CUTTERS	770
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	2,015
TOTAL		15,459	1,909

*(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.