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United States
Nichols Ranch Operation

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 Location:
17 km NE from Linch, Wyoming, United States

  Regional Office:
1701 East E Street
PO Box 50850
Casper
Wyoming, United States
82605
Phone  ...  Subscription required
Fax307-265-8904
WebsiteWeb
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  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeIn-Situ
Commodities
  • Uranium
Mining Method
  • Solution mining
Production Start...
Mine Life11 years (as of Jan 1, 2021)
The Nichols Ranch Project (fully permitted and licensed) includes: the Nichols Ranch Plant, the Nichols Ranch Wellfields, the Jane Dough Property and the Hank Project.

Nichols Ranch is currently on standby, pending market conditions improving sufficiently to resume production. In 2022, the Company will contemplate initiating restoration activities at Production Area #1. In order for Nichols Ranch to engage in future uranium production, the Company will need to incur capital expenditures to develop additional wellfields, as all existing wellfields are now depleted. A decision to commence development will be made if the Company decides to take action in response to uranium prices increasing to a point where the economic feasibility of the Nichols Ranch Project is realized.


Owners

Source: p. 56,185
CompanyInterestOwnership
Energy Fuels Inc. 88.3 % Indirect
Nichols Ranch Wellfield and Hank Property are 100% owned Energy Fuels. The Jane Dough Property contains certain properties that are 100% owned by Energy Fuels and other properties that are held in the Arkose Mining Venture. United Nuclear, owns a 19% interest in the Company’s Arkose Mining Venture while the Company owns the remaining 81%.

Project areas mined (with % ownership): Nichols Ranch (100%), Jane Dough (81%), and Hank (100%) for net attributable basis of 88.3%.

Contractors

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Deposit Type

  • Sandstone hosted


Summary:

The Nichols Ranch Project is located in the Powder River Basin. The mineralized trends within the Nichols Ranch Project are alteration-reduction trends hosted in the Eocene age channel sands that lie at depths of approximately 300 to 1,100 feet from the surface. Roll front deposits of uranium bearing material are anticipated to occur within these properties. An alteration-reduction trend is a natural chemical boundary trend line in a sandstone aquifer where reduced (non-oxidized) sand is in contact with altered (oxidized) sand. Uranium mineralization may be found along the trend line.

The properties in the Nichols Ranch Project contain alteration-reduction trends hosted in Eocene age channel sands. Alterationreduction trends in the Pumpkin Buttes Mining District are typically composed of multiple, stacked roll front deposits that often contain associated uranium mineralization. A stacked roll front is a type of uranium occurrence found in thick sandstone where a number of mineralization trends are stacked on top of each other. Uranium mineralization within and adjacent to the Nichols Ranch Project are found in the Eocene Wasatch Formation (“Wasatch”). The Wasatch is a fluvial deposit composed of arkosic sandstones that are typically 25% or more feldspar grains and indicates a source rock where chemical weathering was not extreme, and the sediments have not been transported far. A fluvial deposit is a deposit of uranium mineralization found in sandstones that origin ........


Mining Methods

  • Solution mining


Summary:

The Nichols Ranch Complex previously operated from 2014 to 2019 and is located within uranium-producing regions of central Wyoming.

The production schedule is based on ISR mining of the uranium mineralization at the Nichols Ranch Mining Unit section of the Complex (Nichols Ranch, Jane Dough, and Hank areas). ISR is an injected-solution mining process that reverses the natural processes that originally deposited the uranium in the sandstones. On-site ground water is being fortified with gaseous oxygen and introduced to the zones of uranium mineralization through a pattern of injection wells. The solution dissolves the uranium from the sandstone host.

The uranium-bearing solution is brought back to surface through production wells where the uranium is concentrated at a central processing plant and dried into yellowcake for market.

ISR mining and milling utilizes the five steps:
1. A solution called lixiviant (typically containing water mixed with oxygen and/or hydrogen peroxide, as well as sodium bicarbonate or carbon dioxide) is injected through a series of wells into the mineralized zones to dissolve and to complex the uranium.
2. The lixiviant with uranium in solution is then collected in a series of recovery wells, through which it is pumped to a processing plant, where the uranium is extracted from the solution through an ion-exchange process.
3. Once the uranium has been extracted, the lixiviant is fortified and reused in th ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits2021202020192018201720162015
U3O8 M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required0.10.30.30.3
All production numbers are expressed as yellow cake.
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Operational Metrics:

Metrics202120202019201820172016
Annual production capacity  ......  Subscription required  ......  Subscription required2 M lbs of u3o8 yellow cake2 M lbs of u3o8 yellow cake2 M lbs of u3o8 yellow cake2 M lbs of u3o8 yellow cake
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Reserves at December 31, 2021:
Mineral Resources were estimated at a cut-off grade of 0.05% eU3O8.

CategoryTonnage CommodityGradeContained Metal
Measured 11,000 tons U3O8 0.187 % 41,140 lbs
Indicated 3,283,000 tons U3O8 0.106 % 6,946,693 lbs
Measured & Indicated 3,294,000 tons U3O8 0.106 % 6,987,833 lbs
Inferred 650,000 tons U3O8 0.097 % 1,256,000 lbs



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 30, 2021
....................... Subscription required ....................... Subscription required Subscription required Dec 30, 2021
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Form 10-K 2018
Corporate Presentation 2017
Form 10-K 2017
Form 10-K 2016
Form 10-K 2015
Preliminary Economic Assessment 2015
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