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Denison Mine and Tailings Management Areas Denison Mines Inc. The picture shows the former Denison Mill location and the related Tailings Management Areas (TMA-1 in the top right and TMA-2 in the middle right) in 1997. Quirke Lake is located in the top left and the Rio Algom Spanish American mine is located in the small solid green area at the top of the photo between Quirke Lake and TMA-1. The Denison Mine closed in 1992. During rehabilitation nearly 2.8 million cubic yards of tailings were hydraulically relocated mostly into deeper areas of TMA-1 while some tailings were placed into the underground workings. All tailings have a 3 foot water cover. |
