John Rylands Library pitched roof over its reinforced concrete roof. Champneys designed a pitched roof but Mrs Rylands was advised that an internal stone vault would reduce the fire risk and it was not built. The £17 million project was completed by summer 2007 and the library reopened on 20 September 2007. By the nineteenth century Manchester was a prosperous industrial town and the demands of cotton manufacturing stimulated the growth of engineering and chemical industries. The town became 'abominably filthy' and was 'often covered, especially during the winter, with dense fogs ... there is at all times a copious descent of soots
University of Manchester Library of the John Rylands Library, enabled the building of a tent-like octagonal hall next to the library, the Muriel Stott Conference Centre (on the building of the extension this was enclosed by the rest of the library). The design of the extension was modified when actually implemented in 1979 so that a link section united it with the three-wing existing library building. This new extension opened in the autumn term of 1981 and at the same time the medical and science (Christie) libraries were vacated so that a more coherent organisation of stock became possible. By the time this building