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United States
Ogden Mine

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 Location:
16 km W from Ogden, Utah, United States

  Address:
765 N. 10500
West Ogden
Utah, United States
84404
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Overview

StageProduction
Mine TypeIn-Situ
Commodities
  • Salt (evaporated)
  • Magnesium
  • Potash
Mining Method
  • Brine mining
Production Start...
Mine Life2161
A solar evaporation facility Ogden project is both the largest sulfate of potash specialty fertilizer (“SOP”) production site, the largest solar salt production site in the Western Hemisphere and the source of the lithium resource that Compass intend to develop.

The primary product currently produced at the Ogden facility is SOP (which is a potassium-rich salt used as plant fertilizer), with coproduct production of sodium chloride (which is used for highway deicing and chemical applications) and magnesium chloride (which is used in deicing, dust control and unpaved road surface stabilization applications). The Company has also identified a lithium resource at the Ogden facility and is currently developing its existing operations to add lithium as a coproduct to SOP production.


Owners

Source: p. 6
CompanyInterestOwnership
Compass Minerals International Inc. 100 % Indirect

Contractors

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Deposit Type

  • Brine
  • Evaporite


Summary:

Mineral Deposit Type
The Great Salt Lake is a terminal lake that hosts enriched brine containing dissolved minerals at concentrations sufficient for economic recovery of certain resources. The mineral resource of the Great Salt Lake currently supports economic recovery of sodium (as NaCl), potassium (as SOP), and magnesium (as MgCl2).

Geologic Description
The GSL Facility produces saleable minerals from brines sourced from the Great Salt Lake. These brines are upgraded through solar evaporation within large constructed ponds. The following describes the geologic relevance of the Great Salt Lake and lays out the man-made aquifers within the evaporation ponds which host brines with high lithium concentrations.

The GSL Facility is located on the shore of the Great Salt Lake in northern Utah. This location is within the geographic transition from the Rocky Mountains, to the Basin and Range Province to the west.

The Great Salt Lake is a remnant of Lake Bonneville, a large Late-Pleistocene pluvial lake that once covered much of western Utah. At its maximum extent, Lake Bonneville covered an area of approximately 20,000 square miles. Lake Bonneville has been in a state of contraction for the past 15,000 years and has resulted in the formation of remnant lakes that include the Great Salt Lake, Sevier Lake, and Utah Lake (Figure 6-1). Evaporation rates higher than input from precipitation and runoff have driven the lake contraction and has s ........


Mining Methods

  • Brine mining


Summary:

The Ogden Site has been operating for over 50 years in a similar context as it is today. When the Ogden Site was commissioned, the high concentration of potassium and other minerals relative to the potential to extract potassium and other minerals using solar evaporation made possible by the site’s location in a high desert with high summer season evaporation made the prospect of solar evaporation to concentrate brines attractive and appropriate. Further, the shallow bathymetry around the perimeter of the GSL renders the construction and operation of solar evaporation ponds feasible.

Current Pond Processes
Mining operations at the Ogden facility are not typical when compared to a normal mine in that there is no actual open pit or underground extraction. The mining of the potassium and other salt effectively involves pumping of brine from the Great Salt Lake into evaporation ponds.

Compass Minerals has approximately 361,000 acre-ft of brine rights that it can extract from the north arm of the Great Salt Lake on an annual basis. Based on recent operational data, the Operation has typically extracted, on average, around 125,000 acre-ft of brine per year. Most of this brine is pumped into the West Ponds with the remainder going into the East Ponds. The process utilizes the concentrated brine pumped from the north arm of the Great Salt Lake, concentrates the compounds through a series of solar evaporation ponds over a three-year timespan. The evaporatio ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits202220212020201920182017
Salt (evaporated) Crystals tons  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required1,061,0001,083,000
Magnesium chloride tons  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Sulfate of potash (SOP) Crystals kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual production capacity  ......  Subscription required  ......  Subscription required1.5 M tons of salt (evaporated) crystals1.5 M tons of salt (evaporated) crystals1.5 M tons of salt (evaporated) crystals1.5 tons of salt (evaporated) crystals
Annual production capacity  ......  Subscription required  ......  Subscription required750,000 tons of magnesium chloride750,000 tons of magnesium chloride750,000 tons of magnesium chloride750,000 tons of magnesium chloride
Annual production capacity  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at September 30, 2022:
SOP Mineral Reserves and Mineral Resources a cut-off grade of approximately 4,000 milligrams of potassium per liter of brine extracted from the north arm of the Great Salt Lake, and a cut-off grade of 1,660 milligrams of potassium per liter of brine in the south arm of the Great Salt Lake, which ultimately flows into the north arm of the Great Salt Lake.

Magnesium Chloride Mineral Reserves and Mineral Resources a cut-off grade of approximately 8,638 milligrams of magnesium per liter of brine extracted from the north arm of the Great Salt Lake, and a cut-off grade of 3,039 milligrams of magnesium per liter of brine in the south arm of the Great Salt Lake which ultimately flows into the north arm of the Great Salt Lake.

Sodium Chloride Mineral Reserves and Resources a cut-off grade of approximately 75,757 milligrams of sodium per liter of brine extracted from the north arm of Great Salt Lake, and a cut-off grade of 40,365 milligrams of sodium per liter of brine in the south arm.

CategoryTonnage CommodityRecoverable Metal
Probable tons Salt (evaporated) 159,602,779 tons
Probable tons Magnesium chloride 94,752,292 tons
Probable tons Sulfate of potash (SOP) 45,522,980 tons
Indicated 2,141,525,310 tons Salt (evaporated)
Indicated 360,191,436 tons Magnesium chloride
Indicated 89,965,949 tons Sulfate of potash (SOP)
Indicated 2,401,218 t LCE
Inferred 45,221 t LCE

Commodity Production Costs:

CommodityUnits20212020201920182017
Total cash costs Sulfate of potash (SOP) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 271 / ton   325 / ton  
Total cash costs Salt (evaporated) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 46.6 / ton   46.1 / ton  
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Financials:

Units202220212020201920182017
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 21   31.1  
Book Value M USD  ......  Subscription required  ......  Subscription required
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Water Supply
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Heavy Mobile Equipment as of December 14, 2022:
HME TypeModelSizeQuantity
Backhoe ....................... Subscription required ....................... Subscription required
Dozer (crawler) ....................... Subscription required ....................... Subscription required
Dozer (crawler) ....................... Subscription required ....................... Subscription required
Dozer (crawler) ....................... Subscription required ....................... Subscription required
Dozer (crawler) ....................... Subscription required ....................... Subscription required
Excavator ....................... Subscription required ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Loader (FEL) ....................... Subscription required ....................... Subscription required
Scraper ....................... Subscription required 37 cu. yd ....................... Subscription required
Truck ....................... Subscription required
Truck ....................... Subscription required ....................... Subscription required
Truck ....................... Subscription required ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (service) ....................... Subscription required
Truck (water) ....................... Subscription required ....................... Subscription required
Truck (water) 4000 gallons ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 10, 2023
....................... Subscription required ....................... Subscription required Subscription required May 17, 2023
....................... Subscription required ....................... Subscription required Subscription required May 10, 2023
....................... Subscription required ....................... Subscription required Subscription required May 10, 2023
....................... Subscription required ....................... Subscription required Subscription required May 17, 2023
....................... Subscription required ....................... Subscription required Subscription required May 17, 2023
....................... Subscription required ....................... Subscription required Subscription required May 17, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Form 10-K 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2016
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Subscription required - Subscription is required.

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