suite de ce post du 13 sept 2015.
http://www.oleocene.org/phpBB3/viewtopi ... 85#p380185
Décision imminente pour BHP au sujet du lancement du projet de mine souterraine de Potasse au Canada.
Si le projet est lancé il y en aura pour 5.7 milliards de dollars d'investissements.
BHP’s decision on Jansen potash mine imminent
Cecilia Jamasmie | June 1, 2021
BHP (ASX, NYSE, LON: BHP), the world’s largest miner, is weeks away from deciding whether to go ahead with its long-delayed Jansen potash project in Canada, more than 10 years after completing the mine’s feasibility study.
The company has been mulling a final decision on the asset for at least eight years, during which it has spent about $4.5 billion laying the ground for the crop nutrient-producing project.
As the deadline for choosing to approve a further $5.7 billion in spending to bring Jansen into production approaches, BHP has begun talks with Canadian rival Nutrien (TSE, NYSE: NTR). The companies are exploring a potential partnership that could help make the project less risky and provide critical infrastructure.
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https://www.mining.com/bhps-decision-on ... -imminent/
Jansen Potash Project, Saskatchewan
The Jansen project is a proposed underground potash development project located in east-central Saskatchewan, approxima
The Jansen project is a proposed underground potash development project located in east-central Saskatchewan, approximately 140km east of Saskatoon.
Owned by BHP Billiton, the mine will be one of the world’s largest potash mines, producing eight million tons of marketable potash annually at full capacity.
The project has advanced to the feasibility study in February 2011 and is scheduled to begin first production in 2015. Development of the mine to full capacity will be carried out over three phases, at an estimated cost of over $12bn. The mine will operate for an estimated life of more than 50 years.
Reserves
The mine contains 3,250 million dry tons of indicated resources graded at 25.4% potassium oxide. Inferred resources have been estimated to be 120 million dry tons grading at 26.7% potassium oxide.
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Mining will involve the long room and pillar method. The potash-bearing members will be accessed through a production and service shaft that will be sunk 1km from the surface. BHP Billiton has initiated drilling for the ground freezing process, required to sink the shaft.
Several rooms will be cut into the potash-bearing zones, leaving several pillars to hold the mine roof. As mining proceeds, a grid-type pattern of rooms and pillars will be created. The ore will be mined using large borers. Through conveyors, the mined ore will be brought to the production shaft that will hoist it to the surface. Approximately 24 million tons of ore will be hoisted to the surface at peak capacity.
During processing, the ore will be crushed to separate the potassium chloride and sodium chloride crystals. The final saleable product will be produced following the stages of scrubbing, conditioning, flotation and de-brining.
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https://www.mining-technology.com/proje ... en-potash/

Jansen potash project in Saskatchewan. Image source: BHP Group Ltd. 2017 picture.
https://www.mining.com/bhp-seeking-2-bi ... take-sale/