It is one of fourteen former uranium mines in Ontario that is monitored by the Canadian Nuclear Safety Commission, and one of twenty in Canada.

[4] The mine operated from 1957 to 1963 and produced 2,333,106 tonnes of uranium ore[5] at an average concentration of 19 mg of uranium per kg of ore.[6] The 2,284,421 tonnes of tailings are deposited in two impoundments near Cardiff:[2][7] Auger Lake and South Tailings Basin which flow into Paudash Lake.

[10][11][12] Repairs to the decommissioned site, included adding vegetation over the tailings, were completed in 1980.

[1] Water sampling completed by the Canadian Nuclear Safety Commission in 2019 confirmed that the site produces no risk to the environment or ecology.

[11] In September 2020, Barrick Gold requested to renew their waste nuclear substance license.