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Brazil
Taquari-Vassouras Mine

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 Location:
5 km W from Carmópolis, Brazil

  Address:
Rodovia SE 206, KM 10 - Campo De Santa Bárbara
Rosário do Catete
Brazil
49760-000
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  • Overview
  • Owners
  • Geology
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Potash
Mining Method
  • Continuous
  • Room-and-pillar
Production Start...
Mine Life2024


Owners

Source: p. 46
CompanyInterestOwnership
The Mosaic Company 100 % Indirect
Mosaic Fertilizantes P&K S.A. (operator) 100 % Direct
100% owned by Mosaic Potássio Mineração Ltda, a wholly owned indirect subsidiary of Mosaic.

Contractors

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Deposit Type

  • Evaporite


Summary:

The Taquari-Vassouras mine is located near Aracaju (Sergipe state) in north-east part of Brazil. The stratigraphic column of the Taquari-Vassouras sub-basin consists, from the base up to the top, of sediments of age varying from the lower Cretaceous (Aptian) to the Terciary, that overlie discordantly the crystalline basement. The potash deposit is found at a depth of 450–500 m in the Ibura Evaporites which consist, from the bottom up, of limestones, anhydrites, halites, carnalites, tachydrites, with interspersed shales, halites with seams of silvinite, calcilutites (clayey fine-grain limestones) and shales. There are two main potash zones, the Upper Basal Silvinite and the Lower Basal Silvinite.


Mining Methods

  • Continuous
  • Room-and-pillar


Summary:

The potash deposit is in the Taquari-Vassouras sub-basin and the Taquari-Vassouras Industrial Complex is in Rosário do Catete. It can be reached by road and is also served by rail about 9km from the site and a port facility about 40 km from the mine site. The underground mining operations comprises three municipalities: Rosário do Catete, Capela and Carmópolis.

The ore is sylvinite (KCL, NaCL) containing sylvite (KCl) and halite (NaCl). It is mined at a depth of 500 to 740 meters by room and pillar methods using six continuous miners. Room and pillar is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. The ore is extracted in two phases. In the first, "pillars" of untouched material are left to support the roof overburden, and open areas or "rooms" are extracted underground; the pillars are then partially extracted in the same manner.


Crushing and Grinding


Processing

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Summary:

- subscription is required.


Production:

CommodityUnits202020192018201620152014
Potash Mt  ......  Subscription required  ......  Subscription required0.30.50.50.5
All production numbers are expressed as MOP.
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Operational Metrics:

Metrics2021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required1.8 Mt
Annual production capacity  ......  Subscription required  ......  Subscription required520,000 t of potash MOP520,000 t of potash MOP
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Reserves at December 31, 2021:
Cut-off grade of > 20% KCl, a minimum Sylvinite thickness of 1.8m, and a minimum Sylvinite percentage per block of 50% was applied for mineral resources and reserves.

CategoryTonnage CommodityGrade
Probable 28.1 Mt KCl 14.7 %
Proven & Probable 28.1 Mt KCl 14.7 %
Indicated 6.8 Mt KCl 23.6 %
Measured & Indicated 6.8 Mt KCl 23.6 %
Inferred 58.1 Mt KCl 22.9 %



Heavy Mobile Equipment as of December 31, 2020:
HME TypeQuantity
Continuous Miner ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 7, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 7, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 20-F 2016
Form 20-F 2015
Corporate Presentation 2012
Other 1997
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