| Agent Name | SILICON CARBIDE |
| CAS # | 409-21-2 |
| RTECS # | |
| Agent Code | 17525 |
| Code | Occupation Description (1980) | Total # Employees (Male & Female) |
Total # Female Employees |
| 073 | CHEMISTS, EXCEPT BIOCHEMISTS | 379 | 46 |
| 105 | THERAPISTS, N.E.C. | 219 | 219 |
| 188 | PAINTERS, SCULPTORS, CRAFT-ARTISTS, AND ARTIST PRINTMAKERS | 215 | 29 |
| 203 | CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS | 10 | 6 |
| 213 | ELECTRICAL AND ELECTRONIC TECHNICIANS | 777 | 44 |
| 215 | MECHANICAL ENGINEERING TECHNICIANS | 129 | |
| 216 | ENGINEERING TECHNICIANS, N.E.C. | 1,182 | 315 |
| 224 | CHEMICAL TECHNICIANS | 39 | 7 |
| 225 | SCIENCE TECHNICIANS, N.E.C. | 627 | |
| 235 | TECHNICIANS, N.E.C. | 44 | |
| 364 | TRAFFIC, SHIPPING, AND RECEIVING CLERKS | 80 | |
| 365 | STOCK AND INVENTORY CLERKS | 1,071 | |
| 379 | GENERAL OFFICE CLERKS | 362 | |
| 446 | HEALTH AIDES, EXCEPT NURSING | 138 | 115 |
| 453 | JANITORS AND CLEANERS | 17,073 | 80 |
| 503 | SUPERVISORS, MECHANICS AND REPAIRERS | 1,013 | |
| 505 | AUTOMOBILE MECHANICS | 56 | |
| 507 | BUS, TRUCK, AND STATIONARY ENGINE MECHANICS | 1,885 | |
| 508 | AIRCRAFT ENGINE MECHANICS | 8,855 | 57 |
| 509 | SMALL ENGINE REPAIRERS | 1,634 | |
| 514 | AUTOMOBILE BODY AND RELATED REPAIRERS | 6,537 | |
| 515 | AIRCRAFT MECHANICS, EXC. ENGINE | 102 | 9 |
| 516 | HEAVY EQUIPMENT MECHANICS | 3,900 | 75 |
| 518 | INDUSTRIAL MACHINERY REPAIRERS | 1,328 | |
| 519 | MACHINERY MAINTENANCE OCCUPATIONS | 129 | |
| 523 | ELECTRONIC REPAIRERS, COMMUNICATIONS AND INDUSTRIAL EQUIPMENT | 1,670 | |
| 534 | HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS | 140 | |
| 535 | CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS | 6 | |
| 538 | OFFICE MACHINE REPAIRERS | 2,169 | |
| 544 | MILLWRIGHTS | 551 | |
| 547 | SPECIFIED MECHANICS AND REPAIRERS, N.E.C. | 3,179 | |
| 549 | NOT SPECIFIED MECHANICS AND REPAIRERS | 2,227 | |
| 563 | BRICKMASONS AND STONEMASONS | 2,895 | |
| 565 | TILE SETTERS, HARD AND SOFT | 2,056 | |
| 567 | CARPENTERS | 2,445 | |
| 573 | DRYWALL INSTALLERS | 1,861 | |
| 575 | ELECTRICIANS | 500 | |
| 577 | ELECTRICAL POWER INSTALLERS AND REPAIRERS | 3,106 | |
| 579 | PAINTERS, CONSTRUCTION AND MAINTENANCE | 1,020 | |
| 585 | PLUMBERS, PIPEFITTERS, AND STEAMFITTERS | 6,316 | |
| 588 | CONCRETE AND TERRAZZO FINISHERS | 216 | |
| 589 | GLAZIERS | 456 | |
| 597 | STRUCTURAL METAL WORKERS | 3,105 | |
| 633 | SUPERVISORS, PRODUCTION OCCUPATIONS | 565 | |
| 634 | TOOL AND DIE MAKERS | 6,880 | 21 |
| 635 | TOOL AND DIE MAKER APPRENTICES | 849 | 18 |
| 637 | MACHINISTS | 45,828 | 4,585 |
| 639 | MACHINIST APPRENTICES | 139 | |
| 643 | BOILERMAKERS | 48 | |
| 644 | PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS | 2,459 | 52 |
| 645 | PATTERNMAKERS AND MODEL MAKERS, METAL | 78 | |
| 653 | SHEET METAL WORKERS | 228 | |
| 655 | MISCELLANEOUS PRECISION METAL WORKERS | 157 | 130 |
| 656 | PATTERNMAKERS AND MODEL MAKERS, WOOD | 82 | 3 |
| 658 | FURNITURE AND WOOD FINISHERS | 675 | 225 |
| 675 | HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS | 1,723 | 147 |
| 676 | PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS | 99 | |
| 683 | ELECTRICAL AND ELECTRONIC EQUIPMENT ASSEMBLERS | 953 | |
| 684 | MISCELLANEOUS PRECISION WORKERS, N.E.C. | 1,413 | 460 |
| 696 | STATIONARY ENGINEERS | 282 | |
| 699 | MISCELLANEOUS PLANT AND SYSTEM OPERATORS | 653 | |
| 703 | LATHE AND TURNING MACHINE SET-UP OPERATORS | 666 | 122 |
| 704 | LATHE AND TURNING MACHINE OPERATORS | 430 | |
| 705 | MILLING AND PLANING MACHINE OPERATORS | 1,958 | |
| 706 | PUNCHING AND STAMPING PRESS MACHINE OPERATORS | 988 | |
| 707 | ROLLING MACHINE OPERATORS | 3,144 | 79 |
| 709 | GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS | 22,409 | 1,478 |
| 715 | MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS | 97 | |
| 717 | FABRICATING MACHINE OPERATORS, N.E.C. | 1,346 | |
| 719 | MOLDING AND CASTING MACHINE OPERATORS | 520 | 33 |
| 723 | METAL PLATING MACHINE OPERATORS | 797 | 181 |
| 724 | HEAT TREATING EQUIPMENT OPERATORS | 533 | |
| 726 | WOOD LATHE, ROUTING, AND PLANING MACHINE OPERATORS | 1,500 | 150 |
| 727 | SAWING MACHINE OPERATORS | 1,897 | 77 |
| 733 | MISCELLANEOUS WOODWORKING MACHINE OPERATORS | 4,904 | 498 |
| 755 | EXTRUDING AND FORMING MACHINE OPERATORS | 314 | |
| 756 | MIXING AND BLENDING MACHINE OPERATORS | 273 | 186 |
| 757 | SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS | 410 | 362 |
| 758 | COMPRESSING AND COMPACTING MACHINE OPERATORS | 91 | |
| 759 | PAINTING AND PAINT SPRAYING MACHINE OPERATORS | 2,075 | 52 |
| 766 | FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD | 4,301 | 253 |
| 768 | CRUSHING AND GRINDING MACHINE OPERATORS | 430 | 29 |
| 769 | SLICING AND CUTTING MACHINE OPERATORS | 1,118 | 492 |
| 777 | MISCELLANEOUS MACHINE OPERATORS, N.E.C. | 3,462 | 896 |
| 779 | MACHINE OPERATORS, NOT SPECIFIED | 9,733 | 1,769 |
| 783 | WELDERS AND CUTTERS | 9,297 | |
| 785 | ASSEMBLERS | 20,583 | 5,718 |
| 796 | PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS | 509 | |
| 797 | PRODUCTION TESTERS | 6 | |
| 804 | TRUCK DRIVERS, HEAVY | 72 | |
| 844 | OPERATING ENGINEERS | 216 | |
| 849 | CRANE AND TOWER OPERATORS | 10 | |
| 856 | INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS | 193 | |
| 859 | MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS | 1,344 | |
| 869 | CONSTRUCTION LABORERS | 6,166 | |
| 873 | PRODUCTION HELPERS | 773 | |
| 889 | LABORERS, EXCEPT CONSTRUCTION | 3,567 | 552 |
| TOTAL | 250,945 | 19,568 | |
*(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.