| Year | 1998 |
| Date | 03-Jul |
| Volume | 181 |
| Issue | 4,071 |
| Page | 15 |
| Category | Road Locomotive |
| Part | 1 |
| Title | Hydraulic Tipping Gear for the Clayton Wagon |
| Author | Bernard Lundberg |
| Notes | Describes the development. UW2011, Fraser & White, duplex pump, turbine, invisible, B&E turbine pump, Thurston Steam Museum, Phil Proctor, raising and lowering, max-lift valve |