Minnesota Supreme Court revokes PolyMet permit, criticizes secrecy
Justices find that state and federal agencies concealed concerns about water pollution potential.
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PolyMet mine permit revoked for failure to meet tribal water regulations
Army Corps revokes key PolyMet permit after push from Fond du Lac Band, saving 900+ acres of wetlands. The company behind proposed copper-nickel mine must start over on application.
Court to consider challenges to PolyMet mine proposal this week
The merits of PolyMet Mining Corp.’s plan to seal its waste in clay to prevent pollution are being closely debated in a St. Paul courtroom this week.
EPA says PolyMet permit threatens waters with mercury pollution
Federal agency declares mine would cause pollution unacceptable to Fond du Lac Band.
Minnesota Supreme Court to review proposed PolyMet mine water permit
The highest court in Minnesota announced this week that it will hear a challenge to a key permit for the proposed PolyMet copper-nickel mine in northeastern Minnesota. It will consider the mine’s water pollution permit, and controversy…
Environmental groups sue to stop PolyMet over endangered species
A coalition of northern Minnesota environmental groups has sued the federal government citing a failure to protect critical habitat for endangered Canada lynx and the northern long-eared bat.
MPCA stands by PolyMet air permit despite concern of “sham permitting”
The Minnesota Pollution Control Agency has affirmed a permit issued to PolyMet, ignoring possible planned expansion of mine after permitting.
Court rejects PolyMet air pollution permit
Judges rule that state agency must consider company’s true plans for proposed copper mine.
EPA recognizes PolyMet mine could pollute tribal waters
In significant decision, federal agency says pollution from the proposed PolyMet copper-nickel mine “may affect” downstream lakes and rivers under the jurisdiction of the Fond du Lac Band of Lake Superior Chippewa.
Parts of proposed PolyMet project’s mine permit rejected by state Supreme Court
Justices reverse state decisions about indefinite water treatment and tailings basin liner, while upholding other points.
Federal officials pause both Twin Metals and PolyMet copper-nickel mine proposals
Government attorneys, engineers, and scientists hit the brakes on both proposed mines in Minnesota’s northwoods.
Environmental lawyers argue at Supreme Court that PolyMet plans bigger mine than permitted
Groups allege company could triple size of project soon after start, violating the Clean Air Act.
Court rules that Minnesota pollution regulators obeyed law when working on PolyMet permit
Decision in lawsuit finds that agency tried to keep criticisms from public, but did not violate any statutes.
Minnesota court rejects air permit for proposed PolyMet copper-nickel mine
Judges order state to consider if PolyMet actually plans a much larger mine than the company told regulators when applying for an air pollution permit.
DNR and PolyMet appeal order to conduct judicial review of controversial copper mine permits
State and mining company ask Supreme Court to review decision by Court of Appeals that requires a contested case hearing to consider facts affecting permits in front of a judge.
PolyMet water permit court proceedings examine actions by regulators
Witnesses and additional evidence were examined after the Court of Appeals ordered a hearing into how state and federal officials worked together to convey concerns over mining pollution.
Minnesota court throws out key PolyMet permits in win for environmental interests
Court of Appeals finds that the DNR was wrong to deny a hearing over the mining and dam safety permits for proposed copper-nickel project in northeastern Minnesota.
PolyMet opponents take case that mine permits are flawed to Court of Appeals
Hearing in St. Paul hosted arguments about numerous contested components of three permits issued to the company by the Department of Natural Resources.
Court puts PolyMet mine on pause while investigating new information
Minnesota Court of Appeals orders halt on project after new questions arise about permits, risks, and responsibilities.
Release of new EPA emails shows how officials suppressed PolyMet comments
EPA releases additional emails that show communication between state and federal government agencies about holding back official comments critical of the project’s water permit.