After the town closed, the church building was relocated to be a shelter shed at Saint Joseph’s Catholic School in Mount Isa.
[5] MKU was formed to develop the uranium deposits and work was soon commenced constructing the township, mine, and dam on the nearby Corella River.
New supply contracts with Japanese, German and American power utilities prompted this re-opening, with Mary Kathleen's second life extended to 1982 when reserves were finally exhausted.
[7] The town, 6 kilometres (3.7 mi) away from the mine, was built around a shallow valley with a post office, cinema, sports ovals, a school, banks and a community store.
[2] The state school was opened in July 1956; temporary hospital facilities and a community store in March 1957; and May 1957 saw the first water pumped from Lake Corella Dam.
The Australian Broadcasting Corporation transmitted to Mary Kathleen via its relay station, ABMKQ, which was shut down when the town was abandoned in 1982.
During its "second life", existing private and community structures and services were revamped and augmented by new additions provided principally by Mary Kathleen Uranium Limited and the Cloncurry Shire Council.
[4] Mary Kathleen became the site of Australia's first major rehabilitation project of a uranium mine, which was completed at the end of 1985 at a cost of some A$19 million.
[9] Since rehabilitation, it has been found that the tailings repository at the Mary Kathleen site has been subject to seepage of radioactive waters from both the toe of the dam and the surface at rates much higher than initially predicted.