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).
Laboratory analysis report detailing the chemical composition of three ball cage samples.
| Identifier | ExFiles\Box 76\3\ scan0092 | |
| Date | 25th October 1918 | |
| Mr Hives, Experimental. H13/EB30519. Laboratory, Re 3 samples of Ball Cages. Analysis. 1. Copper 60.02 Tin Nil Phosphorus Traces Lead .70 Manganese Nil Iron Traces Zinc 39,28 2. 55.5 Nil Traces .80 Nil Traces 43.7 3. 58.7 Nil Traces .52 Nil Traces 40.88 [Handwritten] all about same brinell hardness - HCLH [Footer, upside down] RR 235 B (200 T) (S.F. 103. 25-10-18) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2244 | ||