Mine detail: Portland Open Pit

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Location: Baraga County, Michigan, United States, North America
Lat / long: 46.5336, -88.15284
dep_id: 10170322
mas_id: 260130010
Commodity type: metallic
Trace mineral: Iron
Operation type: Surface
Development status: Past Producer
Reporter: Eastern Field Operations Center (EFOC)
Year first produced: 1909
disc_yr: 1909
References:
  • Deposit:: LAKE SUPERIOR IRON ORES, MINING DIRECTORY AND STATISTICAL RE
  • Deposit:: PUBLISHED BY THE LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P
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