| Year | 1987 |
| Date | 18-Sep |
| Volume | 159 |
| Issue | 3,809 |
| Page | 310 |
| Category | Nautical |
| Part | 1 |
| Title | Trevithick's Dredger Engine |
| Author | Tubal Cain |
| Notes | A one-sixteenth scale model of Richard Trevithick's High Pressure Dredger Engine of 1806, designed and built. The prototype of the model, the model, construction |