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Denison Mine

Uranium mine in Elliot Lake, Ontario, Canada

Field	Value
name	Denison Mine
pushpin_map	Ontario
pushpin_label	Denison Mine
pushpin_map_caption	Location in Ontario
coordinates
place	Elliot Lake
subdivision_type	Province
state/province	Ontario
country	Canada
owner	Denison Mines
products	Uranium
amount	69 Mt ore
opening year	1957
closing year	1992

| state/province = Ontario

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.

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.

The site was the longest continuous operation in the area, from 1957 to 1992, during which time it produced 69 million tonnes of ore.

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.

Geological surveys commenced in July 1954 followed by diamond drilling.

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

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

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

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

The site was decommissioned in 1997.

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.H. Lang, J. W. Griffith, H. R Steacy. (1962). "Canadian Deposits of Uranium and Thorium". Geological Survey of Canada - Department of Mines and Technical Surveys.
"Regulatory Oversight Report for Uranium Mines, Mills, Historic, and Decommissioned Sites in Canada: 2020". Canadian Nuclear Safety Commission.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

uranium-mines-in-ontario underground-mines-in-canada mines-in-elliot-lake former-mines-in-ontario denison-mines mine-closures-in-the-1990s

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