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).
Chemical analysis report of an American Brake Drum.
| Identifier | ExFiles\Box 76\3\ scan0091 | |
| Date | 25th October 1918 | |
| RR 235 b (200 T) (S.F. 103. 25-10-18) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2244 Mr Hives. Exptl Dept. H16/EB7519. Laboratory. Re American Brake Drum. Analysis. Carbon .085 Manganese .22 Phosphorus .017 This is a dead mild steel rather low in Manganese. | ||