In 1943, the workers at the railway unionized, but by then its time was nearly over as the SCCSER began buying buses in 1947. The line to Bell Park was the first to close in 1948 with the two other lines ceasing service in 1950. The SCCSER rolling stock sat at the carhouse for more than two years, finally being cut up for scrap in 1953. The SCCSER was reorganized in 1951 and renamed Sudbury Bus Lines Limited. Shortly after, it was purchased for a symbolic $1 by the financier Paul Desmarais, who used it as a platform for buying up a number of bus lines throughout Ontario, allowing him to launch his business empire. Bus operations would continue under the new name until 1966, when the company ceased operations and was replaced by Laurentian Transit, which was a consortium of local private bus companies. It in turn was supplanted by Sudbury Transit in 1972, the direct predecessor to the current GOVA municipal transit agency.