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United States
Wendover Mine

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 Location:
1 km E from Wendover, Utah, United States

  Address:
2.5 Miles East Frontage Road
P.O. Box 580
Wendover
Utah, United States
84083
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeIn-Situ
Commodities
  • Potash
Mining Method
  • Brine mining
Processing
  • Flotation
  • Solar evaporation
Mine Life30 years (as of Jan 1, 2020)


Owners

Source: p. 111
CompanyInterestOwnership
Intrepid Potash, Inc. 100 % Indirect
Intrepid Potash–Wendover, LLC 100 % Direct

Deposit Type

  • Brine


Summary:

Geology
Potash-bearing brines may be alkaline or enriched in chloride, sulfate, or calcium, depending on the geology within the drainage basin and the resultant chemistry of the inflows to the basin. Potashbearing brines form in salt lakes and salars or playas in closed basins in arid environments, where high rates of near-surface evaporation concentrated the brine. The duration of this process can extend from hundreds of years to tens of thousands of years, and in some cases, over a million years. The potash-bearing brines of the Great Salt Lake and at Wendover, Utah, in the Great Salt Lake Desert are remnants of this lake. These brine-bearing basins are commonly structural basins that formed in volcaniclastic terranes.

The chemical constituents of the water flowing into a potash-bearing basin from precipitation runoff, groundwater, and hydrothermal springs have commonly been scavenged from the local country rocks. Source rocks of the constituents are most commonly acidic to intermediate volcanic rocks, but also include older saline rocks and continental sedimentary rocks (Alonso and Risacher, 1996; Risacher and Fritz, 2009). Sources of potassium in these rocks are weathered minerals, such as orthoclase, microcline, biotite, leucite, and nepheline. Studies have found a positive correlation between potassium, lithium, and boron in brines (Zheng, 1984; Orris, 1997; Carmona and others, 2000), which is probably indicative of their common origin in volcaniclastic terranes that typically are associated with convergent plate boundaries (Orris, 1997). Elevated levels of magnesium are also typical of many of the closedbasin brines.

Closed-basin potash-bearing brine deposits are one of the sources of potash occurring within the United States. Potash production from the Great Salt Lake and at Wendover, Utah is from this deposit type. On a global basis, these deposits are of highly variable size in terms of the amount of contained potash.


Mining Methods

  • Brine mining


Summary:

Potash at Wendover is produced primarily from brine containing salt, potash and magnesium chloride that is collected in ditches from the shallow aquifers of the West Desert. These materials are also collected from a deeper aquifer by means of deep brine wells.

Brine from a shallow potash containing aquifer is collected in over 100 lineal miles of open ditches throughout the 88,000 acres of land controlled by Intrepid. In addition to the brine that is collected in the shallow aquifer, there is a deep potash containing aquifer 1,000 feet below ground.


Crushing and Grinding


Processing

  • Flotation
  • Solar evaporation

Source: Subscription required

Summary:

The Wendover facility has a current estimated productive capacity of approximately 100,000 tons of potash annually; evaporation rates have historically resulted in actual production between approximately 65,000 and 100,000 tons of potash.

Pump the brine collected in the ditch system into an 8,000 acre solar evaporation pond to evaporate water and precipitate salts. Over five billion gallons of brine are pumped into the solar pond system each year. As the brine becomes saturated with potash, it is transferred through a series of smaller evaporation ponds into harvest ponds. When the ripened brine finally reaches the harvest ponds, the ore (a combination of salt and potash) precipitates onto the pond floor. The remaining brine in the harvest ponds is removed and the ore is harvested and transported by elevating scrapers to the mill for processing. In the mill, the potash is separated from the salt by flotation. The material is then dried, compacted, and screened into standard ........

Recoveries & Grades:

CommodityParameter2020201920182017201620152014
Potash Head Grade, %  ......  Subscription required  ......  Subscription required17.315.916.316.217.2
Potash Concentrate Grade, %  ......  Subscription required  ......  Subscription required6060606060

Production:

CommodityUnits2020201920182017201620152014
Potash k tons  ......  Subscription required  ......  Subscription required8978497497
All production numbers are expressed as salt.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Ore tonnes mined  ......  Subscription required409 k tons404 k tons362 k tons239 k tons379 k tons
Annual production capacity  ......  Subscription required100 k tons of potash salt100 k tons of potash salt100 k tons of potash salt100 k tons of potash salt100 k tons of potash salt
Subscription required - Subscription is required.

Reserves at December 31, 2020:
The Wendover facility reserves are the combination of a shallow and a deep aquifer. There were no proven reserves reported for either aquifer because the shallow aquifer represents an unconventional resource and there is uncertainty of the hydrogeology of the deep aquifer.
Probable reserves for the shallow brine at the Wendover facility were calculated from KCl contained in the shallow aquifer based on estimates of porosity and thickness over the reserve area. The distance for projection of probable reserves is a radius of three-quarters of a mile from points of measurement of brine concentration. Probable reserves for the deep-brine aquifer were estimated based on historical draw-down and KCl brine concentrations. The ore grade (% KCl) for both the shallow and deep aquifer is the percentage by weight of KCl in the brine.

CategoryTonnage CommodityGradeContained Metal
Probable k tons KCl 0.7 % 3,060 k tons


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 29, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2017
Form 10-K 2016
Form 10-K 2015
Other 2011
Annual Report 2008
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Aerial view:

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