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United States
Gas Hills Project

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 Location:
107 km W from Casper, Wyoming, United States

  Project Contacts:
101 N. Shoreline Blvd, Suite 450
Corpus Christi
Texas, United States
78401
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EmailEmail
WebsiteWeb
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Overview

StagePreliminary Economic Assessment
Mine TypeIn-Situ
Commodities
  • Uranium
Mining Method
  • Solution mining
Mine Life7 years (as of Jan 1, 2021)
The company’s Project properties, including the West Unit, Central Unit, Rock Hill, South Black Mountain, and Jeep properties, consist of 628 unpatented lode mining claims, one State of Wyoming mineral lease, one private mineral lease, and one private surface use agreement.


Owners

Source:
CompanyInterestOwnership
enCore Energy Corp. 100 % Indirect
January 4, 2022 - enCore Energy Corp. and Azarga Uranium Corp. are pleased to announce the closing of the previously announced plan of arrangement whereby enCore has acquired all of the outstanding shares of Azarga Uranium.

The Gas Hills Uranium Project (the “Project”) is owned by UColo Exploration Corp. (“UColo”), a Utah corporation, and a wholly owned subsidiary of URZ Energy Corp. (“URZ”). URZ is a wholly owned subsidiary of Azarga Uranium Corp.(“Azarga”).

Contractors

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Deposit Type

  • Sandstone hosted


Summary:

Wyoming uranium deposits are roll-front uranium deposits as defined in the “World Distribution of Uranium Deposits (UDEPO) with Uranium Deposit Classification”, (IAEA, 2009). Uranium deposits in the Gas Hills were formed by the classic Wyoming-type roll-fronts. Rollfronts are irregular in shape,roughly tabular and elongated, and range from thin pods and a few feet in width and length, to bodies several hundred or thousands of feet in length. The deposits are roughly parallel to the enclosing beds but may form rolls that cut across bedding. Roll-front deposits are typified by a C-shaped morphology in which the outside of the C extends downgradient in the direction of historic groundwater flow and the tails extend up-gradient of historic groundwater flow. The tails are typically caught up in the finer sand and silt deposits that grade into over and underlying mudstones, whereas the heart of the roll-front (higher grade mineralization) lies within the more porous and permeable sandstones toward the middle of the fluvial deposits.

The Gas Hills uranium deposits are present in an arkosic sandstone facies, the Puddle Springs member of the Wind River formation (e.g. King and Austin, 1966; Armstrong, 1970). Knowledge of the distribution of this member is of great importance in the search for uranium deposits, as permeability determines whether a rock is a favorable or unfavorable host. Fine-grained, only slightly permeable rocks are unfavorable hosts. Highly porous conglom ........


Mining Methods

  • Solution mining


Summary:

Azarga plans to use the ISR mining technique with a low pH lixiviant at the Project. There is no excavation of ore and no mining dilution with this method. Only minerals that can be taken into solution are recovered.

This mining method utilizes injection wells to introduce a lixiviant into the mineralized zone. These advantages include potential for higher recovery, shorter leaching duration, lower lixiviant and oxidant requirements, constituent-specific advantages during groundwater restoration, and a higher degree of natural attenuation than alkaline lixiviant. The lixiviant is made of native groundwater fortified with a complexing agent such as sulfuric acid. The complexing agent bonds with the uranium to form uranyl sulfate, which is then recovered through a series of production wells and piped to a processing plant where the uranyl sulfate is removed from solution using ion exchange. The groundwater is re-fortified with the complexing agent and recirculated to the wellfield to recover additional uranium.

The most fundamental component of ISR mine development and production is the production pattern. A pattern consists of one production well and multiple injection wells which feed lixiviant back to the production well. Injection wells are commonly shared by multiple production wells. Header houses serve multiple patterns and function as both distribution points for injection flow and collection points for production flow. The processing or satellite ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Uranium M lbs 16.5
All production numbers are expressed as U3O8.


Reserves at March 29, 2021:
The cutoff used for mineral resource classification was a minimum 0.02% eU3O8, minimum 1.0-foot thickness, and minimum 0.10 GT.

CategoryTonnage CommodityGradeContained Metal
Measured 993,928 tons U3O8 0.103 % 2,051,065 lbs
Indicated 2,835,339 tons U3O8 0.1 % 5,654,545 lbs
Measured & Indicated 3,829,267 tons U3O8 0.101 % 7,705,610 lbs
Inferred 409,330 tons U3O8 0.052 % 427,817 lbs

Commodity Production Costs:

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

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
Well Field OpEx $M USD  ......  Subscription required
Total OpEx $M USD  ......  Subscription required
Mining Taxes $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
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Pipelines
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2021
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
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