| Agent Name | KIESELGUHR |
| CAS # | 61790-53-2 |
| RTECS # | |
| Agent Code | X3017 |
| Code | Occupation Description (1980) | Total # Employees (Male & Female) |
Total # Female Employees |
| 018 | FUNERAL DIRECTORS | 2,427 | 485 |
| 019 | MANAGERS AND ADMINISTRATORS, N.E.C. | 280 | |
| 027 | PERSONNEL, TRAINING, AND LABOR RELATIONS SPECIALISTS | 50 | |
| 057 | MECHANICAL ENGINEERS | 210 | |
| 059 | ENGINEERS, N.E.C. | 51 | |
| 073 | CHEMISTS, EXCEPT BIOCHEMISTS | 496 | 379 |
| 083 | MEDICAL SCIENTISTS | 79 | 79 |
| 084 | PHYSICIANS | 49 | 33 |
| 095 | REGISTERED NURSES | 398 | 354 |
| 098 | INHALATION THERAPISTS | 217 | 109 |
| 099 | OCCUPATIONAL THERAPISTS | 104 | 91 |
| 188 | PAINTERS, SCULPTORS, CRAFT-ARTISTS, AND ARTIST PRINTMAKERS | 195 | |
| 203 | CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS | 2,880 | 2,267 |
| 208 | HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. | 83 | 74 |
| 213 | ELECTRICAL AND ELECTRONIC TECHNICIANS | 296 | |
| 216 | ENGINEERING TECHNICIANS, N.E.C. | 209 | |
| 223 | BIOLOGICAL TECHNICIANS | 686 | 300 |
| 224 | CHEMICAL TECHNICIANS | 2,587 | 405 |
| 225 | SCIENCE TECHNICIANS, N.E.C. | 1,462 | 485 |
| 235 | TECHNICIANS, N.E.C. | 1,458 | 31 |
| 319 | RECEPTIONISTS | 538 | 492 |
| 346 | MAIL PREPARING AND PAPER HANDLING MACHINE OPERATORS | 377 | 63 |
| 356 | MAIL CLERKS, EXC. POSTAL SERVICE | 500 | |
| 364 | TRAFFIC, SHIPPING, AND RECEIVING CLERKS | 103 | 52 |
| 365 | STOCK AND INVENTORY CLERKS | 1,234 | 610 |
| 389 | ADMINISTRATIVE SUPPORT OCCUPATIONS, N.E.C. | 52 | |
| 444 | MISCELLANEOUS FOOD PREPARATION OCCUPATIONS | 1,855 | 1,659 |
| 445 | DENTAL ASSISTANTS | 58 | 27 |
| 446 | HEALTH AIDES, EXCEPT NURSING | 368 | 286 |
| 449 | MAIDS AND HOUSEMEN | 917 | 670 |
| 453 | JANITORS AND CLEANERS | 10,482 | 675 |
| 486 | GROUNDSKEEPERS AND GARDENERS, EXCEPT FARM | 1,634 | 378 |
| 505 | AUTOMOBILE MECHANICS | 3,731 | |
| 508 | AIRCRAFT ENGINE MECHANICS | 795 | |
| 514 | AUTOMOBILE BODY AND RELATED REPAIRERS | 2,217 | |
| 515 | AIRCRAFT MECHANICS, EXC. ENGINE | 624 | 21 |
| 518 | INDUSTRIAL MACHINERY REPAIRERS | 151 | |
| 519 | MACHINERY MAINTENANCE OCCUPATIONS | 44 | |
| 544 | MILLWRIGHTS | 16 | |
| 547 | SPECIFIED MECHANICS AND REPAIRERS, N.E.C. | 1,226 | |
| 549 | NOT SPECIFIED MECHANICS AND REPAIRERS | 1,702 | |
| 563 | BRICKMASONS AND STONEMASONS | 43 | |
| 565 | TILE SETTERS, HARD AND SOFT | 2,989 | |
| 567 | CARPENTERS | 3,270 | |
| 575 | ELECTRICIANS | 65 | |
| 579 | PAINTERS, CONSTRUCTION AND MAINTENANCE | 7,220 | 456 |
| 585 | PLUMBERS, PIPEFITTERS, AND STEAMFITTERS | 3,360 | |
| 593 | INSULATION WORKERS | 584 | |
| 595 | ROOFERS | 4,576 | |
| 615 | EXPLOSIVES WORKERS | 3 | |
| 617 | MINING OCCUPATIONS, N.E.C. | 14,314 | |
| 633 | SUPERVISORS, PRODUCTION OCCUPATIONS | 1,491 | 104 |
| 637 | MACHINISTS | 156 | |
| 643 | BOILERMAKERS | 48 | |
| 653 | SHEET METAL WORKERS | 1,688 | 28 |
| 655 | MISCELLANEOUS PRECISION METAL WORKERS | 122 | |
| 675 | HAND MOLDERS AND SHAPERS, EXCEPT JEWELERS | 397 | |
| 676 | PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS | 35 | |
| 684 | MISCELLANEOUS PRECISION WORKERS, N.E.C. | 503 | 32 |
| 694 | WATER AND SEWAGE TREATMENT PLANT OPERATORS | 105 | |
| 696 | STATIONARY ENGINEERS | 82 | |
| 699 | MISCELLANEOUS PLANT AND SYSTEM OPERATORS | 97 | |
| 709 | GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS | 2,178 | 571 |
| 719 | MOLDING AND CASTING MACHINE OPERATORS | 1,582 | 102 |
| 723 | METAL PLATING MACHINE OPERATORS | 205 | 34 |
| 728 | SHAPING AND JOINING MACHINE OPERATORS | 908 | |
| 734 | PRINTING MACHINE OPERATORS | 2,012 | 257 |
| 735 | PHOTOENGRAVERS AND LITHOGRAPHERS | 1,009 | 110 |
| 736 | TYPESETTERS AND COMPOSITORS | 2,842 | |
| 737 | MISCELLANEOUS PRINTING MACHINE OPERATORS | 1,435 | 964 |
| 748 | LAUNDERING AND DRY CLEANING MACHINE OPERATORS | 41 | |
| 749 | MISCELLANEOUS TEXTILE MACHINE OPERATORS | 80 | |
| 753 | CEMENTING AND GLUING MACHINE OPERATORS | 867 | 610 |
| 754 | PACKAGING AND FILLING MACHINE OPERATORS | 5,891 | 375 |
| 755 | EXTRUDING AND FORMING MACHINE OPERATORS | 864 | 378 |
| 756 | MIXING AND BLENDING MACHINE OPERATORS | 4,114 | 66 |
| 757 | SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS | 7,439 | 471 |
| 759 | PAINTING AND PAINT SPRAYING MACHINE OPERATORS | 5,204 | 195 |
| 766 | FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD | 1,008 | 18 |
| 769 | SLICING AND CUTTING MACHINE OPERATORS | 221 | |
| 777 | MISCELLANEOUS MACHINE OPERATORS, N.E.C. | 10,697 | 605 |
| 779 | MACHINE OPERATORS, NOT SPECIFIED | 7,015 | 2,017 |
| 783 | WELDERS AND CUTTERS | 872 | |
| 785 | ASSEMBLERS | 5,192 | 1,773 |
| 789 | HAND PAINTING, COATING, AND DECORATING OCCUPATIONS | 340 | |
| 793 | HAND ENGRAVING AND PRINTING OCCUPATIONS | 459 | |
| 796 | PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS | 553 | 403 |
| 797 | PRODUCTION TESTERS | 130 | 130 |
| 859 | MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS | 1,089 | |
| 865 | HELPERS, CONSTRUCTION TRADES | 70 | |
| 869 | CONSTRUCTION LABORERS | 795 | |
| 873 | PRODUCTION HELPERS | 920 | |
| 878 | MACHINE FEEDERS AND OFFBEARERS | 724 | 412 |
| 885 | GARAGE AND SERVICE STATION RELATED OCCUPATIONS | 4,391 | 1,098 |
| 887 | VEHICLE WASHERS AND EQUIPMENT CLEANERS | 1,855 | |
| 888 | HAND PACKERS AND PACKAGERS | 3,611 | 2,735 |
| 889 | LABORERS, EXCEPT CONSTRUCTION | 8,764 | 528 |
| TOTAL | 169,362 | 24,496 | |
*(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.