| Agent Name | POTASSIUM OXIDE K2O |
| CAS # | 12136-45-7 |
| RTECS # | |
| Agent Code | X9079 |
| Code | Occupation Description (1980) | Total # Employees (Male & Female) |
Total # Female Employees |
| 013 | MANAGERS, MARKETING, ADVERTISING, AND PUBLIC RELATIONS | 60 | |
| 053 | CIVIL ENGINEERS | 468 | |
| 073 | CHEMISTS, EXCEPT BIOCHEMISTS | 96 | 32 |
| 084 | PHYSICIANS | 49 | 33 |
| 105 | THERAPISTS, N.E.C. | 219 | 219 |
| 185 | DESIGNERS | 2,201 | 1,467 |
| 204 | DENTAL HYGIENISTS | 18 | 18 |
| 213 | ELECTRICAL AND ELECTRONIC TECHNICIANS | 484 | 48 |
| 216 | ENGINEERING TECHNICIANS, N.E.C. | 758 | 120 |
| 225 | SCIENCE TECHNICIANS, N.E.C. | 1,185 | 474 |
| 335 | FILE CLERKS | 104 | |
| 364 | TRAFFIC, SHIPPING, AND RECEIVING CLERKS | 154 | 31 |
| 365 | STOCK AND INVENTORY CLERKS | 903 | 31 |
| 445 | DENTAL ASSISTANTS | 58 | 27 |
| 453 | JANITORS AND CLEANERS | 10,953 | 449 |
| 516 | HEAVY EQUIPMENT MECHANICS | 3,927 | |
| 518 | INDUSTRIAL MACHINERY REPAIRERS | 365 | |
| 519 | MACHINERY MAINTENANCE OCCUPATIONS | 291 | |
| 544 | MILLWRIGHTS | 169 | |
| 547 | SPECIFIED MECHANICS AND REPAIRERS, N.E.C. | 2,485 | |
| 549 | NOT SPECIFIED MECHANICS AND REPAIRERS | 879 | 17 |
| 558 | SUPERVISORS, N.E.C. | 5,167 | |
| 563 | BRICKMASONS AND STONEMASONS | 1,094 | |
| 565 | TILE SETTERS, HARD AND SOFT | 10,804 | |
| 567 | CARPENTERS | 2,819 | |
| 575 | ELECTRICIANS | 536 | 6 |
| 579 | PAINTERS, CONSTRUCTION AND MAINTENANCE | 2,035 | |
| 584 | PLASTERERS | 184 | |
| 585 | PLUMBERS, PIPEFITTERS, AND STEAMFITTERS | 1,311 | 27 |
| 588 | CONCRETE AND TERRAZZO FINISHERS | 1,246 | |
| 593 | INSULATION WORKERS | 98 | |
| 615 | EXPLOSIVES WORKERS | 72 | |
| 633 | SUPERVISORS, PRODUCTION OCCUPATIONS | 2,180 | |
| 634 | TOOL AND DIE MAKERS | 2,872 | |
| 637 | MACHINISTS | 16,897 | 646 |
| 643 | BOILERMAKERS | 34 | 6 |
| 644 | PRECISION GRINDERS, FITTERS, AND TOOL SHARPENERS | 121 | 30 |
| 647 | PRECIOUS STONES AND METALS WORKERS (JEWELERS) | 677 | 483 |
| 653 | SHEET METAL WORKERS | 1,528 | 43 |
| 676 | PATTERNMAKERS, LAY-OUT WORKERS, AND CUTTERS | 149 | |
| 677 | OPTICAL GOODS WORKERS | 107 | |
| 678 | DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS | 35 | 21 |
| 684 | MISCELLANEOUS PRECISION WORKERS, N.E.C. | 491 | |
| 696 | STATIONARY ENGINEERS | 2,570 | |
| 704 | LATHE AND TURNING MACHINE OPERATORS | 4,527 | 1,019 |
| 705 | MILLING AND PLANING MACHINE OPERATORS | 987 | |
| 706 | PUNCHING AND STAMPING PRESS MACHINE OPERATORS | 129 | 40 |
| 707 | ROLLING MACHINE OPERATORS | 708 | |
| 708 | DRILLING AND BORING MACHINE OPERATORS | 486 | |
| 709 | GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS | 9,867 | 1,647 |
| 713 | FORGING MACHINE OPERATORS | 283 | |
| 714 | NUMERICAL CONTROL MACHINE OPERATORS | 66 | |
| 715 | MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS | 99 | |
| 717 | FABRICATING MACHINE OPERATORS, N.E.C. | 530 | 80 |
| 719 | MOLDING AND CASTING MACHINE OPERATORS | 2,799 | 194 |
| 723 | METAL PLATING MACHINE OPERATORS | 280 | |
| 724 | HEAT TREATING EQUIPMENT OPERATORS | 89 | |
| 734 | PRINTING MACHINE OPERATORS | 63 | 40 |
| 753 | CEMENTING AND GLUING MACHINE OPERATORS | 123 | 123 |
| 754 | PACKAGING AND FILLING MACHINE OPERATORS | 1,974 | |
| 755 | EXTRUDING AND FORMING MACHINE OPERATORS | 794 | |
| 756 | MIXING AND BLENDING MACHINE OPERATORS | 3,692 | 130 |
| 759 | PAINTING AND PAINT SPRAYING MACHINE OPERATORS | 853 | 144 |
| 764 | WASHING, CLEANING, AND PICKLING MACHINE OPERATORS | 194 | |
| 765 | FOLDING MACHINE OPERATORS | 19 | |
| 766 | FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD | 3,983 | 330 |
| 768 | CRUSHING AND GRINDING MACHINE OPERATORS | 1,699 | 65 |
| 769 | SLICING AND CUTTING MACHINE OPERATORS | 547 | |
| 777 | MISCELLANEOUS MACHINE OPERATORS, N.E.C. | 11,292 | 713 |
| 779 | MACHINE OPERATORS, NOT SPECIFIED | 5,675 | 756 |
| 783 | WELDERS AND CUTTERS | 6,293 | 20 |
| 785 | ASSEMBLERS | 5,876 | 425 |
| 794 | HAND GRINDING AND POLISHING OCCUPATIONS | 19 | 19 |
| 796 | PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS | 836 | 299 |
| 804 | TRUCK DRIVERS, HEAVY | 3,657 | |
| 844 | OPERATING ENGINEERS | 1,676 | 181 |
| 849 | CRANE AND TOWER OPERATORS | 445 | |
| 856 | INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS | 369 | |
| 869 | CONSTRUCTION LABORERS | 17,017 | 453 |
| 873 | PRODUCTION HELPERS | 599 | |
| 877 | STOCK HANDLERS AND BAGGERS | 619 | |
| 885 | GARAGE AND SERVICE STATION RELATED OCCUPATIONS | 2,015 | |
| 887 | VEHICLE WASHERS AND EQUIPMENT CLEANERS | 97 | |
| 888 | HAND PACKERS AND PACKAGERS | 940 | 78 |
| 889 | LABORERS, EXCEPT CONSTRUCTION | 11,401 | 1,028 |
| TOTAL | 182,474 | 12,013 | |
*(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.