Public Comment Form

Commenting open: November 15, 2024 12:00AM CT - December 16, 2024 11:59PM CT.

Northshore Mining (Peter Mitchell Mine) - Air Permit

We invite you to comment on the draft air quality permit for Northshore Mining Company's Peter Mitchell Mine in Babbitt.


Northshore Mining Company operates mining equipment, haul trucks, a primary ore crusher, material loadout and stockpile operations, and combustion sources for maintenance and heat at the Peter Mitchell Mine in Babbitt. The mined ore is processed at a different location.


The draft permit reissues the facility’s air quality permit and does not authorize any construction or new emissions. The draft air permit limits particulate matter emissions and requires testing for particulate matter.


An air quality operating permit is required for certain existing facilities or the construction of new facilities that have the potential to emit a significant level of any regulated pollutant. The permit includes all requirements for operation and procedures, applicable rules, emission standards, monitoring, recordkeeping, and reporting. If additional conditions change and modifications are necessary, the MPCA may review and amend the permit.



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Thank you for providing feedback on this project. We value your comments and will use them to assess this project further.


In your comments, please state your interest in the permit application or the draft permit; the explicit actions you wish the MPCA to take, including specific references to the section of the draft permit you believe should be changed; and the reasons supporting your position, stated with sufficient specificity as to allow the MPCA to investigate the merits of the position.


If you want to submit a letter, you can upload the letter on this website or submit it via US Mail to the following address:


Minnesota Pollution Control Agency
c/o Derek Nelson
520 Lafayette Road
Saint Paul, MN 55155

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