Mine detail: Treadwell Mine

Previously called 'Twidwell Bank'

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Location

Lat / long:

37.15697, -90.4334

Resource(M)

Tertiary:	Iron
Other material:	Chalcopyrite, Chert, Hematite, Kaolinite, Limonite, Marcasite, Pyrite, Pyrolusite, Quartz, Sphalerite

Production

Operation type:	Surface
Development status:	Past Producer
First production started:	1907

Geology

References

MAS	292230051
DEP	10147801
Reporter	Lewis, J.D.