| SIC code | SIC Text
| NAICS code | NAICS Text
|
| 1094 | Uranium-Radium-Vanadium Ores | 212291 | Uranium-Radium-Vanadium Ore Mining |
| 2674 | Uncoated Paper and Multiwall Bags | 322224 | Uncoated Paper and Multiwall Bag Manufacturing |
| 3081 | Unsupported Plastics Film and Sheets | 326113 | Unsupported Plastics Film and Sheet (except Packaging) Manufacturing |
| 3082 | Unsupported Plastics Profile Shapes | 326121 | Unsupported Plastics Profile Shape Manufacturing |
| 5932 | Used Merchandise Stores (except pawn shops) | 453310 | Used Merchandise Stores |
| 4311 | United States Postal Service | 491110 | Postal Service |
| 5932 | Used Merchandise Stores (pawnshops) | 522298 | All Other Nondepository Credit Intermediation |
| 6726 | Unit Investment Trusts, Face-Amount Certificate Offices, and Closed-End Management Investment Offices | 525990 | Other Financial Vehicles |
| 7519 | Utility Trailers and Recreational Vehicle Rental | 532120 | Truck, Utility Trailer, and RV (Recreational Vehicle) Rental and Leasing |
| 9999 | Unclassified Establishments | 999990 | Unclassified Establishments |
