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United States
Alta Mesa Mine

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 Location:
39 km SW from Falfurrias, Texas, United States

  Regional Office:
225 Union Blvd., Suite 600
Lakewood
Colorado, United States
80228
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Fax303-974-2141
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeIn-Situ
Commodities
  • Uranium
Mining Method
  • Solution mining
Production Start...
Mine Life15 years (as of Jan 1, 2017)
In 2022, the Company expects to continue to keep the Alta Mesa Project on standby until such time as improvements in uranium market conditions are observed or suitable sales contracts can be procured. Alta Mesa is capable of resuming production within a relatively short period of time after a positive production decision by the Company, with only minimal capital requirements.


Owners

Source: p. 75
CompanyInterestOwnership
Energy Fuels Inc. 100 % Indirect
The Alta Mesa Project is facility that Energy Fuels (Company) acquired in June 2016 through the acquisition of EFR Alta Mesa LLC.

Contractors

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Deposit Type

  • Sandstone hosted


Summary:

The Alta Mesa Project is located within the Texas Gulf Coast along a belt of Tertiary and Quaternary sedimentary formations. At the Alta Mesa Project, in order of importance, uranium is hosted by the Goliad, Oakville, and Catahoula formations. South Texas uranium deposits are sandstone roll-front uranium deposits.

The Alta Mesa Project is located in the South Texas Uranium Province. Mineralization within the South Texas Uranium Province is interpreted to be dominantly roll-front type mineralization and primarily of epigenetic origin. Roll-fronts are formed along an interface between oxidizing ground water solutions which encounter reducing conditions within the host sandstone unit. This boundary between oxidizing and reducing conditions is often referred to as the REDOX interface or front. Mineralization tends to be very continuous.

Within the Alta Mesa portion of the Project, Quaternary formations are exposed at the surface. These are conformably underlain by the Goliad Formation, the primary uranium host. Alta Mesa ISR mine units have exploited uranium mineralization in the Goliad C sands within PAA-1, PAA-2, PAA-3, PAA-4, and PAA-6. The B sand was targeted in PAA-5. Mineral resources have been estimated for the A, B, C, and D sands. Exploration targets in the South Alta Mesa area lie within successively deeper D, E, F, G, and H sands of the Goliad.

Within the Mesteña Grande portion of the project, mineralization is also present in the Golia ........


Mining Methods

  • Solution mining


Summary:

The Alta Mesa Project produced approximately 4.6 million pounds of uranium oxide between 2005 and 2013 via In Situ Recovery mining.

The Project operated in a groundwater clean-up mode until February 2015; therefore, any uranium mined since 2013 remains as in-circuit inventory. The first wellfield (PAA-1) has undergone restoration and is currently being monitored for restoration stability. All other wellfields are being maintained by a small bleed (less than 100 gpm) for permit compliance. The bleed solutions are disposed of in the deep disposal wells.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits20142013
Uranium (U3O8) k lbs 3139
All production numbers are expressed as yellow cake.

Operational Metrics:

Metrics20212020201920172016
Annual production capacity  ......  Subscription required  ......  Subscription required1.5 M lbs of uranium yellow cake1.5 M lbs of uranium yellow cake1.5 M lbs of uranium yellow cake
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Reserves at December 31, 2021:
Mineral Resources are estimated at a 0.3 GT (0.02% U O minimum).

CategoryTonnage CommodityGradeContained Metal
Measured 54 k tons U3O8 0.152 % 164 k lbs
Indicated 1,516 k tons U3O8 0.107 % 3,246 k lbs
Measured & Indicated 1,570 k tons U3O8 0.109 % 3,410 k lbs
Inferred 6,996 k tons U3O8 0.12 % 16,793 k lbs

Financials:

Units2021
Book Value M USD  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 20, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 7, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2017
Form 10-K 2016
Technical Report 2016
Form 10-K 2015
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