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United States
Shirley Basin Project

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 Location:
54 km S from Casper, Wyoming, United States

  Project Contacts:
1478 Willer Drive
Casper
Wyoming, United States
82604
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WebsiteWeb
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Overview

StagePermitting
Mine TypeIn-Situ
Commodities
  • Uranium
Mining Method
  • Solution mining
Mine Life9 years (as of Jan 1, 2021)
Shirley Basin Project has all major permits and licenses required to construct and operate a one million pound per year production facility. To further prepare for construction and operations at Shirley Basin, Ur-Energy plans to install the monitor wells for the first Shirley Basin mine unit in Spring 2023.


Owners

Source: p. 23
CompanyInterestOwnership
Ur-Energy Inc. 100 % Indirect
Ur-Energy USA has wholly-owned subsidiary Pathfinder Mines Corporation, a company incorporated under the laws of the State of Delaware, which holds the Shirley Basin and Lucky Mc properties in Wyoming.

Contractors

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Deposit Type

  • Unconformity related
  • Sandstone hosted


Summary:

Uranium mineralization identified throughout the District occurs as roll front-type deposits.

In the Project area, the primary hosts for uranium mineralization are arkosic sandstones of the Eocene-age Wind River Formation. This formation was unconformably deposited on gentlydipping shales and sandstones of the Cretaceous-age Niobrara and Frontier Formations. The White River Formation unconformably overlies the Wind River Formation and outcrops on the surface throughout most of the Project, with thicknesses ranging from a thin veneer in the FAB Resource Area to over 250 ft. in Area 5,

The Wind River sediments in the Project area were deposited as part of a large fluvial depositional system. The lithology of the Wind River Formation is characterized by thick, medium to coarse-grained, arkosic sandstones separated by thick claystone units. Sandstones and claystones are typically 20 - 75 ft. thick. Minor thin lignite and very carbonaceous shale beds occur locally. These fluvial sediments are located within a large northwest-trending paleochannel system with a gentle 1° dip to the north,

The average thickness of the Wind River Formation within the Project area is approximately 230 ft.

The Lower Sand represents the basal sand unit of the Wind River Formation and in places lies directly above the underlying Cretaceous formations. The Main Sand typically lies approximately 15 - 25 ft. above the Lower Sand. Locally, the two sands merge wher ........


Mining Methods

  • Solution mining


Summary:

The mining method is uranium In-Situ Recovery (ISR). There is no excavation of ore and no mining dilution with this method. Only minerals that can be taken into solution are recovered.

URE plans to use the ISR mining technique at the Shirley Basin Project.

ISR does not require the installation of tailings facilities or significant surface disturbance.

This mining method utilizes injection wells to introduce a lixiviant into the mineralized zone. The lixiviant is made of native groundwater fortified with oxygen as an oxidizer, sodium bicarbonate as a complexing agent, and carbon dioxide for pH control. The oxidizer converts the uranium compounds from a relatively insoluble +4 valence state to a soluble +6 valence state. The complexing agent bonds with the uranium to form uranyl carbonate, which is highly soluble. The dissolved uranyl carbonate is then recovered through a series of new production wells and piped to a processing plant where the uranyl carbonate is removed from the solution using ion exchange. The groundwater is re-fortified with the oxidizer and complexing agent and sent back to the wellfield to recover additional uranium.

Conceptual Wellfield Design
The most fundamental component of ISR mine development and production is the production pattern. A pattern consists of one production well and the injection wells which feed lixiviant to it. Injection wells are commonly shared by multiple production wells. Header ho ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Uranium (U3O8) lbs 1,000,0006,358,337
All production numbers are expressed as U3O8.


Reserves at July 1, 2014:
The Mineral Resources as at 31th December 2021 at Shirley Basin are unchanged from July 01, 2014.

Based on grade cutoff of 0.020 percent eU3O8 and a grade x thickness cutoff of 0.25 GT.

CategoryTonnage CommodityGradeContained Metal
Measured 1,366,572 tons U3O8 0.275 % 7,520,682 lbs
Indicated 548,606 tons U3O8 0.118 % 1,295,036 lbs
Measured & Indicated 1,915,177 tons U3O8 0.23 % 8,815,717 lbs

Commodity Production Costs:

CommodityUnitsAverage
Cash costs U3O8 USD  ......  Subscription required&nbs
All-in costs U3O8 USD  ......  Subscription required&nbs
Assumed price U3O8 USD  ......  Subscription required&nbs
* According to 2021 study / presentation.
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2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Well Field OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 24.7
Refining and transportation $M USD  ......  Subscription required
Total OpEx $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 5% $M USD  ......  Subscription required
Pre-tax NPV @ 10% $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelSizeQuantityStatus
Backhoe ....................... Subscription required Existing
Bulldozer ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required Proposed
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 12, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jan 12, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Form 10-K 2022
Press Release 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Preliminary Economic Assessment 2015
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