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).
To cancel instructions for the Ph.III hydrogen brazed heat exchange due to the introduction of Hall's metal bearings.
| Identifier | ExFiles\Box 131\5\ scan0020 | |
| Date | 12th November 1937 | |
| To By/ALD.{F. Allwood - Experimental Design} from Rm{William Robotham - Chief Engineer}/Std. c. HPS.{Horace Percy Smith - Experimental Factory Mgr} In view of the decision to abandon the Ph.III oil cooler as soon as Hall's metal bearings can be introduced on production, will you please cancel any instructions for the hydrogen brazed heat exchange proposed for Ph.III. Rm{William Robotham - Chief Engineer}/Std. | ||