Image: StoneHammersMinongMine
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Description: Stone Hammers used for prehistoric copper mining by Native Americans at the Minong Mine — on Isle Royale, in northern Michigan. The Minong Mine Historic District is on the National Register of Historic Places in Isle Royale National Park and Keweenaw County, Michigan.
Title: StoneHammersMinongMine
Credit: Popular Science Monthly
Author: N. H. Winchell
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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