Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
597	STRUCTURAL METAL WORKERS	324
633	SUPERVISORS, PRODUCTION OCCUPATIONS	524
637	MACHINISTS	1,738
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	939
708	DRILLING AND BORING MACHINE OPERATORS	437
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	69
769	SLICING AND CUTTING MACHINE OPERATORS	637	116
779	MACHINE OPERATORS, NOT SPECIFIED	2,358
783	WELDERS AND CUTTERS	4,460
785	ASSEMBLERS	1,712
804	TRUCK DRIVERS, HEAVY	207
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	373
869	CONSTRUCTION LABORERS	392
889	LABORERS, EXCEPT CONSTRUCTION	124
TOTAL		14,293	116

*(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.