EPAProposed Rule

Proposed Revision to Minnesota Taconite FIP for U.S. Steel Keetac

EnvironmentEnergy

Summary

The EPA is proposing to update pollution control rules for U.S. Steel's Keetac taconite mine in Minnesota. The changes aim to ensure the mine meets federal air quality standards while operating in the state.

Key Points

  • 1This rule updates air pollution limits for a large iron ore mining operation in Minnesota
  • 2The EPA is giving the public until June 11, 2025 to submit comments on the proposed changes
  • 3The revision affects how U.S. Steel's Keetac facility must monitor and control dust and other air emissions
  • 4Taconite is a low-grade iron ore that requires processing; this rule ensures that processing doesn't pollute nearby air
  • 5The changes are part of Minnesota's state air quality plan, which must comply with federal environmental standards

Key Dates

Published

April 24, 2025

Comment Deadline

June 11, 2025

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This summary is for informational purposes only. It may not capture all nuances of the regulation. Always refer to the official text for authoritative information.

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