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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

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Potash
Mining Method
  • Continuous
  • Room-and-pillar
Processing
  • Dissolving & Crystallising
Mine Life79 years (as of Jan 1, 2009)
On January 28, 2020 - The mine was placed in care and maintenance mode, employing minimal staff and allowing for resumption of operations when needed to meet customers’ needs.

June 4, 2021 - The Mosaic Company is planning to resume production at the Colonsay potash mine. This restart will offset a portion of the production lost by the early closure of the K1 and K2 shafts at Esterhazy. By March of 2022, the company's annualized potash production could increase by 2 million tonnes from 2020 levels, as Esterhazy K3 ramps up to full capacity and Colonsay returns to service.


Owners

Source: p. 16, 158
CompanyInterestOwnership
The Mosaic Company 100 % Indirect
Mosaic Potash Colonsay ULC (operator) 100 % Direct

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.

Colonsay is operated as a conventional underground mine that uses mining machines and room and pillar techniques to bring solid ore to the surface.


Crushing and Grinding


Processing

  • Dissolving & Crystallising

Source: Subscription required

Summary:

Colonsay potash mine produce MOP exclusively.

Recoveries & Grades:

CommodityParameter201920182017201620152014
Potash Head Grade, %  ......  Subscription required26.824.425.726.826.9

Production:

CommodityUnits201920182017201620152014
Potash Mt  ......  Subscription required1.21.10.51.41.4
All production numbers are expressed as crystals.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202020192018201720162015
Annual production capacity  ......  Subscription required1.5 Mt of potash crystals1.5 Mt of potash crystals1.5 Mt of potash crystals1.5 Mt of potash crystals
Ore tonnes mined  ......  Subscription required1.9 Mt3.4 Mt3.4 Mt1.6 Mt3.9 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2020:

CategoryTonnage CommodityGrade
Proven & Probable 295 Mt K2O 26.3 %


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
....................... Subscription required ....................... Subscription required Subscription required Jul 16, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... 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.

Aerial view:

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