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of Victoria Iron works, Adelaide Street, and Mile Thorn, Halifax
Founded by James Ryder Butler who was an apprentice engineer at the Dean Clough Mills in the 1850s.
By 1872 he had changed from making textile machinery to machine tools.
1880 Butlers moved into premises on Adelaide Street, Halifax which included a foundry.
1917 The larger Mile Thorn Works opened a short distance away, in addition to the Adelaide Street works. This company made a wide range of machines including lathes and planing machines.
Member of the Associated British Machine Tool Makers Ltd
1936 Extension at Mile Thorn
1937 Public company incorporated to acquire the business and assets of the private company of similar name with Haorld Butler and several other Butlers as directors
1961 Machine tool makers specialising in planing, slotting and shaping machines ranging from 2/10 tons and heavy machines up to 150 tons. 
Early 1960s recession in the machine tool industry, especially the heavy machines used by shipbuilding and other heavy industries
1968 Plano-milling machine. 
1972 Received support for a project from government programme for the machine tool industry 
By 1974 the company was reporting its results separately, described as part of the B. Elliott Group.