Facility
Mosaic Esterhazy K3 Potash Mine — Saskatchewan
World's largest operating potash mine (commissioned 2022). Built to replace K1/K2 mines closed 2021 due to decades of managed brine inflows since 1985. K3 is a new underground conventional mine — NOT solution mining — but its genesis was a water-management crisis at K1/K2. K3 required $4B+ investment and 12+ years of permitting and construction. Esterhazy K3 demonstrates the capital cost of replacing aging SK potash infrastructure when water intrusion makes conventional mines unviable.
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