National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation*

Agent Name W, TUNGSTEN-MF UNKNOWN
CAS # 7440-33-7
RTECS # YO7175000
Agent Code 74980

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
055 ELECTRICAL AND ELECTRONIC ENGINEERS 488  
073 CHEMISTS, EXCEPT BIOCHEMISTS 9  
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 17 11
216 ENGINEERING TECHNICIANS, N.E.C. 878 426
224 CHEMICAL TECHNICIANS 109 36
225 SCIENCE TECHNICIANS, N.E.C. 6 6
235 TECHNICIANS, N.E.C. 59 29
365 STOCK AND INVENTORY CLERKS 114  
453 JANITORS AND CLEANERS 4,632 24
515 AIRCRAFT MECHANICS, EXC. ENGINE 672 21
534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 243  
535 CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS 1,111 341
544 MILLWRIGHTS 778 3
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 590  
549 NOT SPECIFIED MECHANICS AND REPAIRERS 616  
633 SUPERVISORS, PRODUCTION OCCUPATIONS 322 155
634 TOOL AND DIE MAKERS 1,722 13
637 MACHINISTS 533  
675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 255 64
684 MISCELLANEOUS PRECISION WORKERS, N.E.C. 311  
695 POWER PLANT OPERATORS 35 28
703 LATHE AND TURNING MACHINE SET-UP OPERATORS 171 130
704 LATHE AND TURNING MACHINE OPERATORS 168  
706 PUNCHING AND STAMPING PRESS MACHINE OPERATORS 535  
707 ROLLING MACHINE OPERATORS 778  
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 1,289 25
715 MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS 89  
719 MOLDING AND CASTING MACHINE OPERATORS 22  
723 METAL PLATING MACHINE OPERATORS 937 389
724 HEAT TREATING EQUIPMENT OPERATORS 366 16
754 PACKAGING AND FILLING MACHINE OPERATORS 22 7
755 EXTRUDING AND FORMING MACHINE OPERATORS 1,411  
756 MIXING AND BLENDING MACHINE OPERATORS 45 45
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 1,064 586
769 SLICING AND CUTTING MACHINE OPERATORS 775  
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 405 107
779 MACHINE OPERATORS, NOT SPECIFIED 2,113  
783 WELDERS AND CUTTERS 4,878 75
785 ASSEMBLERS 3,944 975
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 149 37
849 CRANE AND TOWER OPERATORS 568  
869 CONSTRUCTION LABORERS 4,390  
889 LABORERS, EXCEPT CONSTRUCTION 704 43
TOTAL 38,323 3,591

*(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.

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