| Business | Phone |
| Challenge Machine 81 38th Ave Ne, Columbia Heights 55421 | (612) 789-1121 |
| New Hytes Honing 2345 45th Ave Ne, Columbia Heights 55421 | (763) 572-1675 |
| Mercury Tool & Engineering Co 3815 Jefferson St Ne, Columbia Heights 55421 | (763) 788-9678 |
| Lamott Enterprises Inc 3905 California St Ne, Columbia Heights 55421 | (763) 781-0001 |