Prairie River Minerals and NRRI pilot scram mining operation
An iron ore separation process invented and used for decades on the Iron Range, travelled to South Africa for some efficiency upgrades.
Now it’s back in Minnesota, on a trajectory to retrieve valuable iron ore from legacy mine tailings piles.
Johann Grobler, Prairie River Minerals Technical Engineer, worked with an industry/university team to develop the patented Ultra-High Density Media Separation (UHDMS) process along Africa’s North Cape, and recently engaged NRRI’s expertise and scale-up equipment to test it on western Mesabi Range ores.
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