Improved sulfate process holds potential for multiple wins on the Iron Range

October 30, 2022: Clearwater BioLogic "is fine-tuning a process that could turn a cost-effective fix for one of the Iron Range’s biggest environmental problems into a job-producing enterprise," said an Oct. 26 article in The Timberjay, covering northern Minnesota news. Earlier...

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Hanson speaks to the Ely Climate Group

Green Steel gains an advocate in northern Minnesota

Oct. 19, 2022:  On top of renewed media attention for its sulfate cleanup system, Clearwater BioLogic’s Jeff Hanson is also emerging as a champion for green steel development on the Iron Range. He was among the guests on Duluth public television’s Almanac North “Core Conversati...

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Green steel plant in Boden, Sweden

Iron Range could be poised for green steel production

Oct. 13, 2022: How could northern Minnesota help revolutionize the iron and steel industry? "The potential is there for a process that goes right from mine to steel on site," said an editorial on a talk given October 12 by Jeff Hanson of Clearwater BioLogic. The editorial in Th...

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New 3-step process uses reactive iron rather than added chemicals

Innovation in sulfate treatment will cut cost of remediation

October 7, 2022: Clearwater BioLogic announces a new and revised Step 2 in its three-step sulfate treatment process. After Step 1 generates hydrogen sulfide through biological reduction, Step 2 now uses reactive iron treatment: the hydrogen sulfide is bonded with iron without t...

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PolyMet's NorthMet mine site

PolyMet and Teck join forces for copper-nickel mining

July 27, 2022: A new venture between PolyMet Mining and minerals giant Teck Resources creates a significant prospect for the development of copper-nickel mining on Minnesota's Iron Range. Named NewRange Copper Nickel, the joint venture is focused outside of the Rainy River wate...

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Sulfate-impaired waters in northern MN as of Dec. 2021

Facing up to the wild rice sulfate problem

December 31, 2021: For a problem to be solved, it must first be named. Given that fact, 2021 marked progress for Minnesota's wild rice waters, many of which are tainted by sulfates. After a nudge from the federal EPA last March, the Minnesota Pollution Control Agency started in...

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Rainy River, aerial view

Setback for possible copper-nickel mining on the Iron Range

October 21, 2021:  In addition to iron and taconite, Northern Minnesota has deposits of copper, nickel, and other minerals in high demand. One such deposit is in the watershed bordering on the Boundary Waters Canoe Area, part of the National Wilderness Preservation System. At t...

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U.S. Steel’s legal losses may prompt a sulfate cleanup

June 30, 2021:  U.S. Steel is running out of legal options to avoid regulation of the sulfate pollution discharged at its Minntac facility in Mountain Iron, Minnesota.  U.S. Steel's latest legal loss may mark the end of its attempt to block the state's Pollution Control Agency...

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Canoe in wild ricing waters

EPA acts to protect Minnesota’s wild rice waters

April 14, 2021: “Biden's Environmental Protection Agency is emerging as a powerful ally in the years-long fight to get Minnesota to protect wild rice beds from sulfate pollution,” Stephanie Hemphill reported in Minnpost April 13, 2021. “Minnesota tribal and environmental groups...

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More Minnesota wild rice waters designated “impaired” by EPA

  March 30, 2021:  In its latest review of Minnesota’s polluted waters (March 2021), the Environmental Protection Agency  dictated that numerous sulfate-tainted lakes, rivers, and streams be added to the state’s “Impaired Waters” list. These waters do not meet the state’s...

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EPA letter holds MPCA accountable to water quality standards

March 26, 2021:  In a letter dated March 26, 2021, the Environmental Protection Agency required the Minnesota Pollution Control Agency to include sulfate-laden water bodies on its Impaired Waters list, citing “Minnesota’s federally-approved 10 mg/L standard” for wild rice areas. ...

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Wild rice waters in northern Minnesota

Minnesota tribes pressure governor to clean up mining pollution

January 20, 2021:  Tribal nations from across Minnesota are accusing state regulators of bad faith over their continuing failure to address pollution concerns, many stemming from lax regulation of the Iron Range’s taconite industry.  Read the article online or as a PDF.

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