Overview
Stage | Production |
Mine Type | In-Situ |
Commodities |
|
Mining Method |
|
Production Start | ...  |
Mine Life | 2037 |
Commercial production at Lost Creek restarted in May 2023 with HH2-4.
The first two mine units at Lost Creek (MU1 and MU2) have all appropriate permits necessary for a return to commercial level operations, including production resulting from ongoing MU2 construction and development.
Ur-Energy awaits only the approval by the Wyoming Department of Environmental Quality, Land Quality Division (“LQD”) of the amendment to the Lost Creek permit to mine adding HJ and KM horizons at LC East and HJ mine units at Lost Creek. It is anticipated the LQD review will be complete in 2023. |
Source:
p. 10-11
Company | Interest | Ownership |
Ur-Energy Inc.
|
100 %
|
Indirect
|
Lost Creek ISR, LLC
(operator)
|
100 %
|
Direct
|
Ur-Energy USA has three wholly-owned subsidiaries: NFU Wyoming, LLC, Lost Creek ISR, LLC, and Pathfinder Mines Corporation.
Lost Creek ISR, LLC, is a limited liability company formed under the laws of the State of Wyoming to hold and operate the Lost Creek Project and certain other Lost Creek properties and assets.
Contractors
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Summary:
Mineralization of the Lost Creek Property
Mineralization at the Lost Creek Project and Adjoining Projects occurs as roll front type uranium deposits.
Mineralization occurs in sand horizons within the Eocene-age Battle Spring Formation. The most significant mineral resources in the Property occur within two major stratigraphic horizons, the HJ and the KM Horizons. The HJ Horizon contains most of the currently defined mineral resources and hosts the current production zones. As discussed earlier, the HJ Horizon is subdivided into four stratigraphic sub-horizons that are also used for resource reporting. The highest abundance of uranium mineralization occurs in the MHJ1 and MHJ2 sub-horizons. Each sub-horizon, in turn, may consist of multiple mineralized roll fronts. The HJ Horizon, as a whole, contains up to 11 individual roll fronts within a stratigraphic interval of approximately 130 ft.
The KM Horizon underlies the HJ Horizon and contains additional significant mineralization that will be targeted for future production later in the Lost Creek mine plan. Mine approvals for the KM Horizon have and will be addressed by amendments to the mine license and permits. To date, a total of nine individual roll fronts have been identified in the KM Horizon within a stratigraphic interval of approximately 100 ft.
Mineral resources that are currently targeted for mining in the Property occur within two major trends. In the Lost Creek Project, resourc ........

Summary:
Ur-Energy(URE) is using In-situ Recovery(ISR) at the Property. ISR is employed because this technique allows for the low cost and effective recovery of roll front mineralization. An additional benefit is that ISR is relatively environmentally benign when compared to conventional open pit or underground recovery techniques. ISR does not require the installation of tailings facilities or significant surface disturbance.
This mining method utilizes injection wells to introduce a mining solution, called lixiviant, into the mineralized zone. The lixiviant is made of natural groundwater fortified with oxygen as an oxidizer, sodium bicarbonate as a complexing agent, and carbon dioxide for pH control. An alternative for lixiviant makeup is the omission of sodium bicarbonate while increasing the quantity of carbon dioxide. This version allows for the generation of natural sodium bicarbonate from the formation. The oxidizer converts the uranium compounds from a relatively insoluble +4 valance state to a soluble +6 valance 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 production wells and piped to a processing plant where the uranyl carbonate is removed from the solution using ion exchange (IX). The groundwater is re-fortified with the oxidizer and complexing agent and sent back to the wellfield to recover additional uranium.
In order to use I ........

Flow Sheet:
Summary:

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Production:
Due to persistent low uranium prices, Ur-Energy has limited its production operations since the third quarter of 2020. During 2021, Ur-Energy captured 251 pounds of U3O8 and during 2022, Ur-Energy captured 325 pounds of U3O8 at the Lost Creek plant. All of Ur-Energy sales made in 2020 were of purchased inventory. Ur-Energy made no sales of U3O8 in either 2021 or 2022.
Commodity | Units | 2020 | 2019 | 2018 | 2017 | 2016 |
Uranium
|
lbs
| ......  | ......  | 286,358 | 254,012 | 561,094 |
All production numbers are expressed as U3O8.
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Operational Metrics:
Metrics | 2022 | 2020 | 2019 | 2018 | 2017 |
Annual production capacity
| ......  | 2 M lbs of uranium U3O8 | 2 M lbs of uranium U3O8 | 2 M lbs of uranium U3O8 | 2 M lbs of uranium U3O8 |
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Reserves at December 31, 2021:
Resources based on grade cutoff of 0.02 % eU3O8 (equivalent U3O8 as measured by a calibrated gamma instrument) and a GT (Grade x Thickness product (% ft.) of a uranium intercept (expressed without units)) cutoff of 0.20.
Category | Tonnage | Commodity | Grade | Contained Metal |
Measured
|
7,115 k tons
|
U3O8
|
0.048 %
|
6,887 k lbs
|
Indicated
|
5,523 k tons
|
U3O8
|
0.046 %
|
5,027 k lbs
|
Measured & Indicated
|
12,638 k tons
|
U3O8
|
0.047 %
|
11,914 k lbs
|
Inferred
|
7,512 k tons
|
U3O8
|
0.044 %
|
6,607 k lbs
|
Commodity Production Costs:
| Commodity | Units | 2020 | 2019 | 2018 | 2017 | 2016 |
Cash costs
|
U3O8
|
USD
|
......
|
......
|
23.9 / lb
|
29.5 / lb
|
17.2 / lb
|
Financials:
| Units | 2020 | 2019 | 2018 | 2017 | 2016 |
Sustaining costs
|
M USD
| | ......  |
0.3
|
0.5
|
0.5
|
Revenue
|
M USD
| ......  | ......  |
23.5
|
38.4
|
|
Operating Income
|
M USD
| ......  | ......  |
1.3
|
|
|
Gross profit
|
M USD
| ......  | ......  |
11.3
|
14
|
|
After-tax Income
|
M USD
| ......  | ......  |
4.5
|
0.08
|
|
Source:

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Corporate Filings & Presentations:
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