![Mahoning-Hull-Rust Open Pit Mine, Hibbing, Minnesota Antique Postcard N5492 - Mary L. Martin Ltd. Postcards Mahoning-Hull-Rust Open Pit Mine, Hibbing, Minnesota Antique Postcard N5492 - Mary L. Martin Ltd. Postcards](https://www.marylmartin.com/wp-content/uploads/2016/01/294644.jpg)
Mahoning-Hull-Rust Open Pit Mine, Hibbing, Minnesota Antique Postcard N5492 - Mary L. Martin Ltd. Postcards
![Minnesota Vintage Postcard: Hull-Rust Mahoning open pit iron ore mine in Hibbing, Minnesota in the 1950''s. Somewhere ou… | Lake superior, Vintage postcard, Scenery Minnesota Vintage Postcard: Hull-Rust Mahoning open pit iron ore mine in Hibbing, Minnesota in the 1950''s. Somewhere ou… | Lake superior, Vintage postcard, Scenery](https://i.pinimg.com/originals/5e/e9/0b/5ee90b2a51ec9cae0345fb1ae91f164a.jpg)
Minnesota Vintage Postcard: Hull-Rust Mahoning open pit iron ore mine in Hibbing, Minnesota in the 1950''s. Somewhere ou… | Lake superior, Vintage postcard, Scenery
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