Things changed, however, in 1934 when miners and smeltermen revitalized the union. Returning to its militant roots, the union spread throughout the west from its base in Butte, and then into the South and Canada. There were also union locals in non-ferrous smelters in New Jersey – in Perth Amboy at the American Smelting and Refining Company (ASARCO), and in Carteret at the U.S. Metals Company. The union was one of the original members of the Committee for Industrial Organizing, which later transformed itself into the Congress of Industrial Organizations.