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Canada
Colonsay Mine

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 Location:
9 km SE from Colonsay, Saskatchewan, Canada

  Address:
P.O. Box 1500
Colonsay
Saskatchewan, Canada
S0K 0Z0
Phone  ...  Subscription required
Fax(306)-944-4245
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Potash
Mining Method
  • Continuous
  • Room-and-pillar
Mine Life79 years (as of Jan 1, 2009)
In August 2019, Mosaic indefinitely idled Colonsay, Saskatchewan mine. In the third quarter of 2021, the company restarted operations at Colonsay to offset a portion of the production lost by the early closure of K1 and K2.


Owners

Source: p. 42
CompanyInterestOwnership
The Mosaic Company 100 % Indirect
Mosaic Potash Colonsay ULC (operator) 100 % Direct
Colonsay Potash Facility is 100% owned by Mosaic Potash Colonsay ULC, a wholly-owned, indirect subsidiary of Mosaic.

Contractors

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Deposit Type

  • Evaporite


Summary:

Extensive potash deposits are found in the southern half of the Province of Saskatchewan. The potash ore is contained in a predominantly rock salt formation known as the Prairie Evaporites. The Prairie Evaporites deposits are bounded by limestone formations and contain the potash beds. Three potash deposits of economic importance occur in Saskatchewan: the Esterhazy, Belle Plaine and Patience Lake members. The Patience Lake member is mined at Colonsay. The particular beds mined at Colonsay and Esterhazy have a mining height of 11 and 8 feet, respectively.


Mining Methods

  • Continuous
  • Room-and-pillar


Summary:

Colonsay utilizes shaft mining. Traditional potash shaft mining takes place underground at depths of over 1,000 meters where continuous mining machines cut out the ore face and load it onto conveyor belts. The ore is then crushed, moved to storage bins and hoisted to refineries above ground. Mining at Colonsay is conducted within the upper portion of the Patience Lake Member using a room and pillar mining method.


Crushing and Grinding


Processing

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Summary:

- subscription is required.


Production:
Colonsay potash site was re-started in August 2021 after being idled for two years due to challenging market conditions.

CommodityUnits202120192018201720162015
Potash Mt  ......  Subscription required  ......  Subscription required1.21.10.51.4
All production numbers are expressed as crystals.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required1.9 Mt3.4 Mt3.4 Mt1.6 Mt
Annual production capacity  ......  Subscription required  ......  Subscription required1.5 Mt of potash crystals1.5 Mt of potash crystals1.5 Mt of potash crystals1.5 Mt of potash crystals
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven 104 Mt K2O 25.3 %
Probable 163 Mt K2O 27.2 %
Proven & Probable 267 Mt K2O 26.5 %
Inferred 977 Mt K2O 29 %



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 29, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 29, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2017
Form 10-K 2016
Other 2014
Environmental Impact Statement 2009
Other 2009
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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