This looks like the most recent version of a map I’ve posted before, in 2013. It’s published by the Transportation and Resource Extraction Committee of the Great Lakes Indian Fish and Wildlife Commission.
The GLIFWC map appears on page 73 of the 2020-2024 Lake Superior Lakewide Action and Management Plan put out last week by the governments of the United States and Canada.
The report includes lots of information about mining in the Lake Superior region that deserves consideration. The report also notes: “The cumulative impact of mines on the ecological integrity of Lake Superior is not well understood.”