Dewey-Burdock Uranium Project, South Dakota

Environmentally Responsible American Energy

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The DeweyBurdock Project is an advanced-stage uranium exploration project located in South Dakota and owned 100% by enCore Energy Corp, purchased from Powertech/Azarga Uranium.  The project is divided into two mineral resource areas; Dewey and Burdock sites, where wellfields would extract uranium.  A central processing facility would be located at Burdock and a satellite facility would be constructed at the Dewey.  Uranium mineralization is comprised of “roll-front” type uranium mineralization hosted in several sandstone stratigraphic horizons within the Inyan Kara Formation that are isolated from adjacent aquifers and therefore amenable to In-Situ Recovery technology.

The Project includes federal claims, private mineral rights and private surface rights covering a 10,580-acre project license boundary as well as surrounding areas.  In total, enCore Energy controls approximately 16,962 acres of mineral rights and 12,613 acres of surface rights.

The Project has obtained a Source and Byproduct Materials License issued by the U.S. Nuclear Regulatory Agency in April of 2014 and Underground Injection Control Class III and V permits issued from the U.S. Environmental Protection Agency Region 8 in October of 2020.   Additional approvals necessary for construction and operation of the Project are in progress including those from the State of South Dakota and Bureau of Land Management.

The project is expected to bring a significant economic benefit to the local area with millions of dollars in expenditures, payroll,  tax revenue, new jobs, and commercial activity supporting the project. Project life is estimated at 2 years of construction, 9 years of production years followed by reclamation and groundwater restoration. [1]

[1] NI 43-101 Technical Report, Preliminary Economic Assessment. Dewey-Burdock Uranium ISR Project, South Dakota, USA, completed by Woodard & Curran and Rough Stock Mining Services (effective 3 December 2019)

Who is enCore?

enCore Energy is a publicly-traded company that is focused on becoming the next uranium producer in the United States. Our goal is to provide a safe, reliable, carbon-free domestic source of energy to help build a strong nation, community, and people. enCore Energy is led by a team with extensive experience in the uranium sector, especially in the application of in-situ recovery extraction technology, an effective process with minimal environmental impacts. The team is based across the United States and is focused on building a pipeline of projects with South Texas as the initial production target and expanding to include projects such as the Dewey Burdock project. We welcome community input and seek to engage with the community to ensure we act as both a good neighbor and work to ensure mutual benefits form economic activity in the communities where we work.


Uranium was found in the Edgemont district, South Dakota, in 1952. Early discoveries were at the surface. Later drilling revealed deeper uranium deposits. In the mid 1970’s, Tennessee Valley Authority (TVA) bought a major interest in the area and made Dewey Burdock their main exploration target. Silver King Mines, project operator for TVA, had explored the property with over 4,000 drill holes. enCore Energy acquired the Dewey Burdock project from Azarga Uranium in 2021.

What is In-Situ Recovery? Will It Work at Dewey Burdock?

In-Situ Recovery (ISR) is a mineral extraction technology which injects a water-based lixiviant solution into the ground to extract minerals from the earth without conventional mining techniques and minimal use of groundwater. Recovery wells pump the mineral-carrying solution back to the surface where it is taken to a processing facility to be separated. ISR has been safely used around the world for over 50 years with minimal environmental impact. Once an ISR operation is complete, the groundwater and land are restored to their previous condition and use categories.

Why In-Situ Recovery?

Analysis of the Fall River and Lakota hydro-stratigraphic unit, host for the mineralization, indicates that a range of  ISR well pumping rates is suitable within the hydro-stratigraphic unit’s potential, and the unit’s transmissivity provide favorable conditions for ISR mining techniques.

Why American Uranium?

Why Nuclear Energy?

Learn More About ISR & enCore

ISR: Environmentally Friendly Mineral Extraction
enCore: Drilling at Rosita in South Texas

Industry News

Casper Start Tribune
Wyoming leads nation on coal-to-nuclear as interest climbs

Next Steps

Upon completion of all project approvals, the project would be expected to undergo initial wellfield development and initial facility construction over a period of approximately 18 months before the commencement of production.  The project would subsequently be developed in a phased manner with sequential development of additional wellfields and facilities to sustain a licensed production rate of 1 million lbs. U3O8 per year.