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).
Metallurgical analysis report for a wet liner, made from Vacrit Cylinder Iron by Hepworth & Grandage, including two micrographs.
| Identifier | ExFiles\Box 132\4\ scan0022 | |
| Date | 23th November 1936 guessed | |
| 1124 Mark "Hepworth & Grandage Vacrit Cylinder Iron" * file in "Cylinder-General" M146 P 682.3 Wet Liner X100 X500 | ||