REGIONAL—Northshore Mining’s Silver Bay plant has been fined $19,000 for repeated violations of its wastewater permit and Minnesota environmental rules. A Minnesota Pollution Control Agency investigation found that from 2023-2025, Northshore Mining released recycled water to the ground seven times and water relating to mining processes four times, actions which are not permitted under its wastewater permit.
The company’s largest unpermitted release was nearly 400,000 gallons of recycled water. Northshore Mining reported that a small amount of recycled water may have reached the Beaver River. The company has documented equipment failure as the reason for the 11 releases.
In addition to the monetary penalty, the MPCA requires Northshore Mining to:
• Submit a spill prevention report that details the actions that Northshore Mining has taken to prevent unauthorized spills resulting from equipment failure.
• Replace 8,000 feet of pipeline that were the source of most releases, between Jan. 1, 2025, and Dec. 31. 2026
• Implement a piping integrity plan.
When calculating penalties, the MPCA considers how seriously the violations affected or could have
affected the environment, and whether they were first-time or repeat violations.
The agency
also attempts to recover the economic benefit the company gained by failing to comply with
environmental laws in a timely manner.