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 of 'Very good American Spring No. 2'.
| Identifier | ExFiles\Box 43\2\ Scan038 | |
| Date | 7th September 1921 | |
| R.R. 25m (100 T) (S.H. 798, 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2948 X3900 Hs.{Lord Ernest Hives - Chair} H12/GLT 7.9.21. Laboratory. Re Very good American Spring. No 2. Analysis:- Carbon. 0.44% Manganese 0.72% Nickel. Nil Chromium. Nil Silicon. 1.83% Sulphur. 0.030% Phosphorus 0.018% The brinell varies between 385 & 415. H1. HE RECEIVED SEP 7 1921 | ||