https://www.world-nuclear-news.org/
The project, which is some 75 km south of Lake Athabasca and 15 km east of the border with the Province of Alberta, operated from 1979 to 2002, producing more than 62 million pounds U3O8 (23,848 tU) from two underground mines and four open pit mines.
The operation also included a tailings management facility, a mill and other support facilities. The Cluff Lake Project is located on Treaty 8 territory, the Homeland of the Métis, and is within the traditional territories of the Dene, Cree, and Métis people. Cluff Lake was fully decommissioned in 2013.