Mine detail: Portland Open Pit

Previously called ''

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Location

Lat / long: 46.5336, -88.15284

Resource(M)

Tertiary: Iron
Discovery year: 1909

Production

Operation type: Surface
Development status: Past Producer
First production started: 1909

Geology

References

MAS260130010
DEP10170322
Reference{Deposit:: LAKE SUPERIOR IRON ORES, MINING DIRECTORY AND STATISTICAL RE}{Deposit:: PUBLISHED BY THE LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P}
ReporterEastern Field Operations Center (EFOC)