The union was chartered by the
American Federation of Labor on September 8, 1903. It was the merger of two smaller, AFL-affiliated unions. The '''Quarrymen's National Union of the United States of America'
operated from 1890 to 1900 and the National State Quarrymen's Union''' from 1895 to 1898. In 1938, it withdrew from the AFL and joined the
Congress of Industrial Organizations (CIO). Three years later, it renamed itself the
United Stone and Allied Products Workers of America (USAPWA). In 1955, it became a founding member of the
AFL–CIO. After years of decline, it merged with the
United Steel Workers of America in 1971. The union's papers (1906-1914) are held by the
Walter P. Reuther Library at
Wayne State University. ==Notable people==