The Iron and Steel Trades Confederation (ISTC) was a British trade union for metal-workers and allied groups, being the largest union in these fields. It was formed on 1 January 1917 as a merger of existing steel-workers' unions and it is now part of Community. History In 1917 Minister of Labour, John Hodge passed the Trade Unions' Amalgamation Act, which simplified the process whereby Trade Unions merged, amalgamated or federated. This was in response to both the difficulty of mergers under the previous legislation (requiring two-thirds majorities in favor in all participant unions), as well as a desire to push craft unions into general trade unions to cover entire industries. However, difficulties still remained. When the first three members federated in 1917, they were legally prevented from accepting any new members. The ISTC focused on industrial negotiations, and new members joined its subsidiary, the British Iron, Steel and Kindred Trades Association (BISAKTA); formally, unions which federated after 1917 joined this association. Trade unions that have amalgamated with or transferred engagements to the ISTC or BISAKTA and year it occurred: British Steel Smelters, Mill, Iron and Tinplate Workers Union (1917) Associated Iron and Steel Workers of Great Britain (1917) National Steel Workers' Associated Engineering and Labour League (1917) Amalgamated Society of Steel and Iron Workers of Great Britain (1920) Tin and Sheet Millmen's Association (1921) Wire Workers Union (1922–24, 1991) National Union of Blastfurnacemen (1985) Power Loom Carpet Weavers and Textile Workers Union (2000) National League of the Blind and Disabled (2000) The resultant union was named the Iron and Steel Trades Confederation. Members of the Amalgamated Association of Steel and Iron Workers of Great Britain and of the Tin and Sheet Millmens' Association voted against joining the union, but were later reballoted and voted in favour. The Wire Workers Union joined the confederation in 1922 but left in 1924, rejoining in 1991. Other members left in 1924 to form the Constructional Engineering Union. From the 1980s, employment in the metalworking trades was in sharp decline, and membership of the ISTC dropped in line with this. In 1984, the existing ISTC was legally absorbed by BISAKTA, which took on the ISTC name. In later years the union also built up representation amongst workers in the electronics industry, plastics and glass, the manufacture of kitchen furniture, carpet production, and call centres. Expansion was especially strong in areas with major steel industry installations.