From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Photomicrograph showing various particles, fibres, and debris.
| Identifier | ExFiles\Box 132\5\ scan0152 | |
| Date | 11th January 1941 guessed | |
| ", | ||