 It did not organize or control any large factories and was only able to organize one significant strike – in Slatersville, Rhode Island (now part of North Smithfield), which was, however, a great failure.In 1905, at that union's founding convention, the STLA became a part of the Industrial Workers of the World, an industrial union.Some in the IWW feared that DeLeon, who became an important leader in the organization, would attempt to make it a shadow of the SLP, as the STLA had been.