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United States
La Sal Complex

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 Location:
39 km SE from Moab, Utah, 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

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Uranium
  • Vanadium
Mining Method
  • Split-shooting
  • Room-and-pillar
Mine Life7 years (as of Jan 1, 2017)
The La Sal Project is an existing complex comprised of seven individual underground uranium mines and properties. From east to west, these are Pine Ridge (reclaimed mine), Pandora Mine, Snowball Mine, La Sal Decline, Beaver Shaft, Redd Block IV (property), and the Energy Queen Mine.

Following the end of commercial mining at the Project in October 2012, the Project was placed on care and maintenance. In 2018 the La Sal, Beaver, and Pandora portions of the Complex were reopened and rehabilitated as part of a test mining program. In May 2019 the Project was placed back into care and maintenance mode.

Subject to any actions the Company may take in response to general market conditions, work planned for 2022 includes continuing care and maintenance activities on the properties within the La Sal Project.


Owners

Source: p. 115
CompanyInterestOwnership
Energy Fuels Inc. 100 % Indirect
The La Sal Project is held by Energy Fuels’ subsidiary, EFR Colorado Plateau LLC.

Contractors

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Deposit Type

  • Sandstone hosted


Summary:

The La Sal Project uranium-vanadium deposits in the Jurassic Salt Wash Member of the Morrison Formation are sandstone-type deposits that fit into the U.S. Department of Energy’s (“DOE”) classification as defined by Austin and D’Andrea (Mickle and Mathews, 1978) Class 240 sandstone; Subclass 244-nonchannel-controlled peneconcordant. Any future deep drilling to explore for deposits in the Triassic basal Chinle Formation (Moss Back Member) would fit the DOE classification as Class 240- sandstone; Subclass 243- channel controlled peneconcordant. These classes are very similar to those of Dahlkamp (1993) Type 4-sandstone; Subtype 4.1- tabular/peneconcordant; Class 4.1.2 (a) Vanadium-Uranium (Salt Wash type) and Class 4.1.3-basal-channel (Chinle type).

The La Sal district uranium-vanadium deposits are a similar type to those elsewhere in the Uravan Mineral Belt. The Uravan Mineral Belt was defined by Fisher and Hilpert (1952) as a curved, elongated area in southwestern Colorado where the uraniumvanadium deposits in the Salt Wash Member of the Morrison Formation generally have closer spacing, larger size, and higher grade than those in adjacent areas and the region as a whole. The location and shape of mineralized deposits are largely controlled by the permeability of the host sandstone. Most mineralization is in trends where Top Rim sandstones are thick, usually 40 feet or greater.

The La Sal Trend is a large channel of Top Rim sandstone which trends due east, ........


Mining Methods

  • Split-shooting
  • Room-and-pillar


Summary:

The mining of all resources in the La Sal Project have been by conventional underground methods. The nature of the Salt Wash uranium vanadium deposits require a random room and pillar mining configuration. The deposits have irregular shapes and occur within several closespaced, flat or slight-dipping horizons. The mineralization often rolls between horizons. The use of rubber-tired equipment allows the miners to follow the ore easily in the slight dips and to ramp up or down to the other horizons. The deposits are accessed from the surface through long declines at gradients of 8-15%, depending on depth and locations suitable for portal sites, such as the La Sal and Pandora/Snowball mines. Deposits may also be accessed through vertical shafts such as at the Beaver and Energy Queen mines. Depending on ground conditions, the shafts will be lined with concrete or with steel and timber-lagging methods. Most recently, the Beaver Shaft was used for hoisting ore, ventilation, and a secondary escape. It is connected underground to the La Sal mine which provided man and equipment access to the Beaver mine areas. The Salt Wash sandstones are usually quite competent rock and require only moderate ground support. The overlying Brushy Basin mudstones are less competent, so the declines are often supported by square set timber or steel arch and timber lagging, as is the case at the La Sal and Pandora mines. The Salt Wash uranium vanadium deposits are usually thinner than the mining height n ........


Crushing and Grinding


Processing

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Summary:

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Reserves at December 31, 2021:
Mineral Resources are estimated at a cut-off grade of 0.17% U3O8.

CategoryTonnage CommodityGradeContained Metal
Inferred 823 k tons U3O8 0.26 % 4,281 k lbs
Inferred 823 k tons V2O5 1.08 % 17,747 k lbs



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... 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 2020
................................... Subscription required 2019
Corporate Presentation 2017
Form 10-K 2017
Form 10-K 2016
Form 10-K 2015
Technical Report 2014
Technical Report 2012
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