Mine detail: North Star Mine

Previously called 'Ralph Mine'

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Location

Lat / long:

42.58641, -90.40871

Resource(M)

Tertiary:	Zinc
Discovery year:	1943

Production

Operation type:	Underground
Development status:	Past Producer
First production started:	1944

Geology

References

MAS	550650135
DEP	10278174
Reporter	Eastern Field Operations Center (EFOC)