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Canada
Allan Mine

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 Location:
4.1 km N from Allan, Saskatchewan, Canada

  Address:

Box 301
Allan
Saskatchewan, Canada
S0K 0C0
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  • Production
  • Reserves
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Potash
Mining Method
  • Continuous
  • Room-and-pillar
Production Start...
Mine Life48 years (as of Jan 1, 2021)


Owners

Source: p. 6, 50
CompanyInterestOwnership
Potash Corporation of Saskatchewan Inc. (operator) 100 % Direct
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 potash extracted from the predominantly sylvinite ore has its main use as a fertilizer.

The 100 m to 200 m thick Prairie Evaporite Formation is overlain by approximately 500 m of Devonian carbonates, followed by 100 m of Cretaceous sandstone, and 400 m of Cretaceous shales and Pleistocene glacial tills to surface; it is underlain by Devonian carbonates (Fuzesy, 1982). 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 Plai ........


Mining Methods

  • Continuous
  • Room-and-pillar


Summary:

At Allan, 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 early 1968, and the first potash ore was hoisted by in April of that year. The Allan mine has run on a continuous basis since the first ore was hoisted in 1968, other than shortterm shutdowns taken for inventory management purposes or occasional plant maintenance and construction work.

In recent years, the Allan mine underwent a major expansion which brought the nameplate capacity up to 4.0 million tonnes of finished potash products per year. The operational capability at the Allan facility as of December 31, 2021, is 3.0 million tonnes per year

Virtually all Allan 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 Allan, mine elevatio ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2021202020192018201720162015
Potash Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required2.41.82.42.4
All production numbers are expressed as salt.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required6.15 Mt6.55 Mt5.22 Mt6.82 Mt
Annual production capacity  ......  Subscription required  ......  Subscription required4 Mt of potash salt4 Mt of potash salt4 Mt of potash salt4 Mt of potash salt
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Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven 107 Mt K2O
Probable 244 Mt K2O
Proven & Probable 351 Mt K2O 24.7 %
Measured 2,890 Mt K2O
Indicated 5,078 Mt K2O
Inferred 2,333 Mt K2O
Total Resource 10,301 Mt K2O 22.3 %



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
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Staff:

EmployeesYear
Subscription required 2017
Subscription required 2016
Subscription required 2015
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Press Release 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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