Mining and Uranium
Denison
1 picture · 1981
- Founded
- 1954 (Elliot Lake claims / predecessor); Denison Mine production 1957
- Head office then
- Toronto, Ontario
Denison mined and milled uranium at Elliot Lake, Ontario. Production started in 1957. The 1981 report said 1982 would be twenty-five years of continuous output there. The company also held the Stanrock and Can-Met sites in the same camp.
Elliot Lake was a Cold War and later CANDU uranium camp. Denison was one of two long-lived operators there, with Rio Algom, and a main employer in the city.
Why it mattered
Elliot Lake was a Cold War and later CANDU uranium camp. Denison was one of two long-lived corporate operators there (with Rio Algom) and a main employer in the city. Ore went to domestic and export nuclear-fuel markets.
Now
The Denison Mine closed in March 1992. The Denison name continues as Denison Mines Corp., a Toronto company working in the Athabasca Basin. Elliot Lake is a closed, licensed tailings site, not an operating mine.
Still open
- Exact 1981 Toronto street address not confirmed in the sources used here.
- Ore-tonnage figures for Elliot Lake differ slightly between Denison’s history page (69 million tonnes) and a CNS decommissioning paper (63 million tonnes milled); neither is used as a single official total in the body text.
Sources
The pictures
- Denison 1981 — annual reportarchive.org/details/McGillLibrary-635201-34169
References
- Denison Mines Corp.: Corporate History1954 claims; mine 1957–1992; 1997 environmental services; 2006 IUC arrangement → Denison Mines Corp.
- CNSC: Uranium mines and mills wasteDenison Mine, Canmet, Stanrock listed as closed; licensee Denison Mines Ltd.
- Ontario AMIS record 07804 (Denison)Opened 1957; closed 31 Mar 1992; ongoing CNSC monitoring
- CNS: Decommissioning of the Denison uranium facilitiesProduction May 1957–April 1992; rehabilitation 1992–1996
- Denison Mines Corp. Annual Information Form (F2024)Modern Denison is IUC (1997) renamed 1 Dec 2006; Toronto HO; Athabasca projects