Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	7
224	CHEMICAL TECHNICIANS	223	56
356	MAIL CLERKS, EXC. POSTAL SERVICE	98	7
453	JANITORS AND CLEANERS	2,088
505	AUTOMOBILE MECHANICS	2,197
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	259
515	AIRCRAFT MECHANICS, EXC. ENGINE	4,018
516	HEAVY EQUIPMENT MECHANICS	66
549	NOT SPECIFIED MECHANICS AND REPAIRERS	339
633	SUPERVISORS, PRODUCTION OCCUPATIONS	437
675	HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS	285
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	116
719	MOLDING AND CASTING MACHINE OPERATORS	25
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	3,878
769	SLICING AND CUTTING MACHINE OPERATORS	522
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	1,311
779	MACHINE OPERATORS, NOT SPECIFIED	1,131
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	10
804	TRUCK DRIVERS, HEAVY	7,980
805	TRUCK DRIVERS, LIGHT	5,099	259
844	OPERATING ENGINEERS	1,937
869	CONSTRUCTION LABORERS	3,913
878	MACHINE FEEDERS AND OFFBEARERS	801
885	GARAGE AND SERVICE STATION RELATED OCCUPATIONS	74,194	20,074
889	LABORERS, EXCEPT CONSTRUCTION	332
TOTAL		111,267	20,396

*(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.