John Rylands manufacturers, and about the same time they erected a new spinning mill. The Ainsworth mills, near Bolton, and other factories were subsequently acquired. Joseph and Richard retired around 1839 and the death of their father in July 1847 made John Rylands sole proprietor. The business continued to expand and in 1849 a warehouse was opened in Wood Street, London. A great fire occurred at the Manchester warehouse in 1854 but the loss, although very large, was speedily repaired. By 1864 the warehouses were seven storeys high and extended all the way along New High Street (now High Street) in Manchester:
Rylands v Fletcher tort, but instead a sub-tort of nuisance. In 1860, Rylands paid contractors to build a reservoir on his land, intending that it should supply the Ainsworth Mill with water. Rylands played no active role in the construction, instead contracting out to a competent engineer. While building it, the contractors discovered a series of old coal shafts and passages under the land filled loosely with soil and debris, which joined up with Thomas Fletcher's adjoining mine. Rather than blocking these shafts up, the contractors left them. On 11 December 1860, shortly after being filled for the first time, Rylands' reservoir burst