United Operative Masons and Granite Cutters' Union

Founded as the Aberdeen Operative Masons and Stonecutters Society in 1888, it changed its name in 1892 to the United Operative Masons and Granite Cutters' Union. By 1894 it had nearly 2000 members - nearly all those eligiable to join. Its agreement with the Aberdeen Granite Association guarenteed that only members of the union would be employed, and it continued in operation until 1919.

In 1920, the United Operative Masons and Granite Cutters' Union amalgamated with several related unions to form the Building and Monumental Workers' Association of Scotland. This later amalgamated with the Amalgamated Union of Building Trade Workers in 1942.

Sources: Diack "The Rise and Progress of the Granite Industry of Aberdeen", Archives Hub (online), unionancestors.co.uk