| Year | 2004 |
| Date | 28-May |
| Volume | 192 |
| Issue | 4,222 |
| Page | 616 |
| Category | Stationary Engine |
| Part | |
| Title | Triple Expansion Engines. A Glance Within |
| Author | Ted Wale |
| Notes | Results of initial research. Dave Whalley's No. 6 engine, Kempton Park Waterworks, Peter Southworth's Hawthorn Leslie 4,500hp triple expansion marine engine, Trencherfield Mill, Wigan, references |