2024-10-112024-10-11https://hdl.handle.net/11299/266096US Steel Corporation / Ralph Marsden Iron Ore CollectionCountry = USAState = MinnesotaCounty = St LouisLocality = HibbingMine = Penobscot MineUniversity of Minnesota DuluthBox # = 21Storage Box # = 30US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #509Image