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).
Asking for and specifying a recommended material for production.
| Identifier | ExFiles\Box 175\2\ img119 | |
| Date | 26th May 1941 guessed | |
| ->D.T.D. 424<- D.T.D. 434. What material is recommended for production. D.T.D 434. Grade 3. RR50. (Remelted Scrap) (Low side in Magnesium) | ||