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 memo regarding further testing on bar Nitralloy steel before tappet production.
| Identifier | ExFiles\Box 154a\1\ scan0122 | |
| Date | 27th November 1928 | |
| X4469 H12/EA27.11.28. Laboratory. BY.{R.W. Bailey - Chief Engineer} c to Hs.{Lord Ernest Hives - Chair} c to RHC.{R. H. Coverley - Production Engineer} Re Special Nitralloy Steel. Your Ref. BY/EM2/K.26.11.28. We would prefer to carry out some more tests on the bar Nitralloy (on order) before undertaking the production of tappets. We conclude that the bar material will be produced from the same cast of material as the experimental pieces. Hl. HE | ||