Duluth, MN Mines
Mines in Duluth, Minnesota
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Arrowhead Blacktop Co | Private | Stone, Crushed | ||
| Boulder Lake--North | Copper Iron Nickel Titanium |
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| Boulder Lake--South | Copper Iron Nickel Titanium |
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| Central Boulder Lake | Copper Iron Nickel Titanium |
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| Mailing Pit | Ken-Son Services Inc. (Kenneth Holmgren Owner) | Sand and Gravel | ||
| Normana Pit | St Louis County Highway Department | Private | Sand and Gravel | |
| Superior Grinding Plant | National Gypsum Co. | Unknown | Stone, Crushed |