Canada

Cory Mine

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Categories

Overview

Mine TypeUnderground
StatusActive
Commodities
  • Potash
Mining Method
  • Room-and-pillar
  • Continuous
Production Start... Lock
Mine Life... Lock
SnapshotAt 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.

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.

Owners

SourceSource
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 Prairie Evaporite Formation. There are two potash seams named A Zone and B Zone within this Member; at present, only the A Zone is being mined at Cory. Some test mining has been carried out in the B Zone, but no mining is done in this layer at present. Neither the Esterhazy nor the White Bear Potash Members are present in the Cory area. The Belle Plaine Potash Member is not well-developed, and therefore is not mined.

Cory potash mineralization occurs at a depth averaging approximately 1,010 m below surface. The A Zone is approximately 3.35 m thick and occurs near the top of the Prairie Evaporite Formation salts. Salt cover from the ore zone to overlying units is approximately 12 m.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Production

CommodityProductUnits202320222021202020192018201720162015
Potash Salt Mt  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe10.811.21.5

Operational metrics

Metrics202320222021202020192018201720162015
Annual production capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe3 Mt of potash salt3 Mt of potash salt3 Mt of potash salt3 Mt of potash salt
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe3.46 Mt2.82 Mt3.41 Mt4.41 Mt5.15 Mt

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 25, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 25, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 25, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 25, 2024

EmployeesYear
...... Subscription required 2017
...... Subscription required 2016
...... Subscription required 2015

Aerial view:

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