Tailings dam design could change, NewRange tells tribal nations

Duluth News Tribune

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Tailings dam design could change, NewRange tells tribal nations

HOYT LAKES The company trying to open Minnesota’s first copper-nickel mine told tribal nations it may consider changing its planned method of storing tailings waste rock left behind after removing copper, nickel, cobalt and other metals as “global standards have changed.”NewRange Copper Nickel, a joint venture formed between mining companies Glencore and Teck to advance the NorthMet project, has planned to store its mine waste slurry on top o…