National Occupational Exposure Survey
(1981 - 1983)

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

Agent Name CRISTOBALITE
CAS # 14464-46-1
RTECS # VV7325000
Agent Code T0624

Code Occupation Description (1980) Total # Employees
(Male & Female)
Total # Female
Employees
057 MECHANICAL ENGINEERS 210  
073 CHEMISTS, EXCEPT BIOCHEMISTS 131 56
084 PHYSICIANS 49 33
096 PHARMACISTS 143 86
188 PAINTERS, SCULPTORS, CRAFT-ARTISTS, AND ARTIST PRINTMAKERS 173 74
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 24  
216 ENGINEERING TECHNICIANS, N.E.C. 796 120
365 STOCK AND INVENTORY CLERKS 205  
453 JANITORS AND CLEANERS 605  
505 AUTOMOBILE MECHANICS 32  
508 AIRCRAFT ENGINE MECHANICS 20  
549 NOT SPECIFIED MECHANICS AND REPAIRERS 617  
563 BRICKMASONS AND STONEMASONS 565  
565 TILE SETTERS, HARD AND SOFT 2,056  
567 CARPENTERS 828  
579 PAINTERS, CONSTRUCTION AND MAINTENANCE 69  
583 PAPERHANGERS 387  
617 MINING OCCUPATIONS, N.E.C. 159  
653 SHEET METAL WORKERS 103  
675 HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS 488 101
678 DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS 632  
709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 156  
719 MOLDING AND CASTING MACHINE OPERATORS 936 73
724 HEAT TREATING EQUIPMENT OPERATORS 25  
755 EXTRUDING AND FORMING MACHINE OPERATORS 26  
756 MIXING AND BLENDING MACHINE OPERATORS 474 27
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 200  
759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 4,390 118
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 5,357 383
768 CRUSHING AND GRINDING MACHINE OPERATORS 1,197  
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 6,603 658
779 MACHINE OPERATORS, NOT SPECIFIED 375  
785 ASSEMBLERS 1,207 207
787 HAND MOLDING, CASTING, AND FORMING OCCUPATIONS 232 174
793 HAND ENGRAVING AND PRINTING OCCUPATIONS 23 3
796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 181 69
797 PRODUCTION TESTERS 131  
849 CRANE AND TOWER OPERATORS 162  
859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 197  
865 HELPERS, CONSTRUCTION TRADES 126  
869 CONSTRUCTION LABORERS 795  
888 HAND PACKERS AND PACKAGERS 168  
889 LABORERS, EXCEPT CONSTRUCTION 116 46
TOTAL 31,369 2,228

*(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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