Denison Mine

46°29′44.15″N 082°36′00.85″W / 46.4955972°N 82.6002361°W / 46.4955972; -82.6002361ProductionProductsUraniumProduction69 Mt oreHistoryOpened1957Closed1992OwnerCompanyDenison Mines

Consolidated Denison Mine, or the Denison Mine is an abandoned uranium mine located approximately 12.5 km north of Elliot Lake, Ontario. The site is bordered north by Quirke Mine and New Quirke Mine; on the east by Panel Mine and Can-Met Mine; and south by Spanish American Mine and Stanrock Mine.^[1]

It is owned by Denison Mines Ltd. The site has been rehabilitated and its tailings facility is currently undergoing environmental monitoring by Denison Environmental Services.^[1]

The site was the longest continuous operation in the area, from 1957 to 1992, during which time it produced 69 million tonnes of ore.^{[citation needed]}

History

The site was discovered in 1953, by F. H. Jowsey, A. W. Stollery who sold his stake to Consolidated Denison Mines Limited in 1954.^[1]

Geological surveys commenced in July 1954 followed by diamond drilling.^[1]

Two shafts were started in 1955 one to 1,856 feet and another to 2,766 feet that wasn't completed until 1957.^[1]

In 1957 reserves were estimated at 136,787,400 tons graded at 2.78 pounds of U₃0₈ per ton.^[1]

Ore processing facilities were built, capable to processing 5,700 to 6,000 tons per day.^[1]

The site has two tailings management areas that includes 64 million tons of tailings under water.^[2]

The site was decommissioned in 1997.^[2]

Other mines in the area

Stanleigh Mine
Spanish American Mine
Can-Met Mine
Milliken Mine
Panel Mine
Stanrock Mine
Quirke Mine(s)
Pronto Mine
Buckles Mine
Lacnor Mine
Nordic Mine

References

^ ^a ^b ^c ^d ^e ^f ^g A.H. Lang, J. W. Griffith, H. R Steacy (1962). Canadian Deposits of Uranium and Thorium (PDF). Yukon University: Geological Survey of Canada - Department of Mines and Technical Surveys. p. 175.{{cite book}}: CS1 maint: multiple names: authors list (link)
^ ^a ^b "Regulatory Oversight Report for Uranium Mines, Mills, Historic, and Decommissioned Sites in Canada: 2020" (PDF). Canadian Nuclear Safety Commission.

External links

"Elliot Lake Uranium Mines". MiningWatch Canada. Retrieved 2009-01-30.
"CIM Bulletin - The Story of Elliot Lake". Canadian Institute of Mining and Metallurgy. Retrieved 2009-01-30.
"The Gulliver Denison Mines Ltd Dossier". SEA-US. Archived from the original on 2000-06-03. Retrieved 2009-06-18.