By 1900 Bolton was Lancashire's third largest engineering centre after Manchester and Oldham. About 9,000 men were employed in the industry, half of them working for Dobson and Barlow in Kay Street. The firm made textile machinery.  Another engineering company Hick, Hargreaves & Co based at the Soho Foundry made Lancashire boilers and heavy machinery.  Thomas Ryder and Son of Turner Bridge manufactured machine tools for the international motor industry. Wrought iron was produced for more than 100 years at Thomas Walmsley and Sons ' Atlas Forge.