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).
Letter from L.R.B. Pearce Ltd. regarding a mixture for frost immunity.
| Identifier | ExFiles\Box 151\3\ scan0056 | |
| Date | 28th February 1929 guessed | |
| L.R.B.PEARCE LTD. 50 MARK LANE, E.C.3. (2) As you will note from the enclosed booklet, to obtain immunity against 47° of frost, you mix 50 parts of RAD with 50 parts of water and you will agree this protects you against the most severe weather that is likely to confront you in the United Kingdom. If there are any other particulars which you require, we shall be only too pleased if you would ring us up and let us know. Yours faithfully, for L. R. {Sir Henry Royce} B. PEARCE. B[unclear signature] LTD. | ||