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Canada
Cory Mine

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 Location:
7 km W from Saskatoon, Saskatchewan, Canada

  Address:

Box 1320
Saskatoon
Saskatchewan, Canada
S7K 3N9
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Potash
Mining Method
  • Continuous
  • Room-and-pillar
Production Start...
Mine Life2059
In recent years, the Cory mine underwent a major expansion which brought the nameplate capacity up to 3.0 million tonnes of finished potash products per year. At Cory, potash ore has been mined and concentrated to produce saleable quantities of high grade finished potash products. Raw potash ore is processed on surface and concentrated finished potash products (near-pure KCl) are sold and shipped to markets in North America and offshore.


Owners

Source: p. 6,52
CompanyInterestOwnership
Nutrien Ltd. 100 % Indirect

Contractors

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Deposit Type

  • Evaporite


Summary:

Much of southern Saskatchewan is underlain by the Prairie Evaporite Formation, a layered sequence of salts and anhydrite which contains one of the world’s largest deposits of potash. The 100 m to 200 m thick Prairie Evaporite Formation is overlain by approximately 400 m of Devonian carbonates followed by 100 m of Cretaceous sandstone, 400 m of Cretaceous shales, and 100m of recent Pleistocene glacial tills to surface. The Prairie Evaporite Formation is underlain by Devonian carbonates. The Phanerozoic stratigraphy of Saskatchewan is remarkable in that units are flat-lying and relatively undisturbed over very large areas. Potash mineralization in this region of Saskatchewan is predominantly sylvinite, which is comprised mainly of the minerals sylvite (KCl) and halite or rock salt (NaCl), with trace carnallite (KMgCl3 · 6H2O) and minor water insolubles. Potash fertilizer is concentrated, nearly pure KCl (i.e. greater than 95% pure KCl), but ore grade is traditionally reported on a % K2O equivalent basis. The “% K2O equivalent” gives a standard measurement of the nutrient value of different potassium-bearing rocks and minerals. To convert from % K2O equivalent tonnes to actual KCl tonnes, multiply by 1.58.

There are three mineable potash members within the Prairie Evaporite Formation of Saskatchewan. Stratigraphically highest to lowest, these members are: Patience Lake, Belle Plaine, and Esterhazy. The Cory potash deposit lies within the Patience Lake Potash Member of ........


Mining Methods

  • Continuous
  • Room-and-pillar


Summary:

At Cory, potash ore is mined using conventional mining methods, whereby:
- Shafts are sunk to the potash ore body;
- Continuous mining machines cut out the ore, which is hoisted to surface through the production shaft;
- Raw potash is processed and concentrated in a mill on surface; and
- Concentrated finished potash products (near-pure KCl) are sold and shipped to markets in North America and offshore.

Sinking of the two original shafts (Shaft #1 and Shaft #2) from surface to the potash zone was completed in 1968, and the first potash ore was hoisted in the fall of that year. The Cory mine has run on a continuous basis since the first ore was hoisted in 1968, other than short-term shutdowns taken for inventory management purposes or occasional plant maintenance and construction work.

Virtually all Cory underground mining rooms are in one potash mineralized zone, the upper layer (or A Zone) of the Patience Lake Member of the Prairie Evaporite Formation (the host evaporite salt). In contrast, some potash mines further east in Saskatchewan mine in a different potash layer, the Esterhazy Member of the Prairie Evaporite Formation. At Cory, mine elevations average approximately 1,010 m depth below surface. Mine workings are protected from aquifers in overlying formations by approximately 12 m of overlying salt and potash beds, along with salt plugged porosity in the Dawson Bay Formation, a carbonate layer lying immediately above potash ........


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityProductUnits2022202120202019201820172016
Potash Salt Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required0.811.2
K2O t  ......  Subscription required  ......  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 required3 Mt of potash salt3 Mt of potash salt3 Mt of potash salt3 Mt of potash salt
Ore tonnes mined  ......  Subscription required  ......  Subscription required4.6 Mt3.46 Mt2.82 Mt3.41 Mt
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Reserves at December 31, 2022:

CategoryTonnage Commodity
Proven 61 Mt K2O
Probable 141 Mt K2O
Proven & Probable 202 Mt K2O
Measured 2,452 Mt K2O
Indicated 1,225 Mt K2O
Inferred 2,570 Mt K2O
Total Resource 6,247 Mt K2O


Water Supply
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Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 18, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Sep 18, 2023
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Staff:

EmployeesYear
Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Annual Information Form 2022
Annual Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Technical Report 2018
Annual Information Form 2017
Annual Report 2017
Annual Report 2016
Form 10-K 2016
Annual Report 2015
Form 10-K 2015
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