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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 Life45 years (as of Jan 1, 2021)


Owners

Source: p. 6,50
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

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2021202020192018201720162015
Potash Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required0.811.21.5
All production numbers are expressed as salt.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required3.46 Mt2.82 Mt3.41 Mt4.41 Mt
Annual production capacity  ......  Subscription required  ......  Subscription required3 Mt of potash salt3 Mt of potash salt3 Mt of potash salt3 Mt of potash salt
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Reserves at December 31, 2021:
The Mineral Resources as at 31th December 2021 at Cory Mine are unchanged from December 31, 2020.

CategoryTonnage CommodityGrade
Proven 67 Mt K2O
Probable 141 Mt K2O
Proven & Probable 208 Mt K2O 21.9 %
Measured 2,452 Mt K2O
Indicated 1,225 Mt K2O
Inferred 2,570 Mt K2O
Total Resource 6,247 Mt K2O



Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 18, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 18, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Aug 18, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... 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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Subscription required - Subscription is required.

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