Mine detail: Winthrop

Previously called 'Braastad-Winthrop'

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Location

Lat / long: 46.4531, -87.69172

Resource(M)

Tertiary: Iron
Discovery year: 1869

Production

Operation type: Underground
Development status: Past Producer
First production started: 1870

Geology

References

MAS261030107
DEP10146135
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)