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Keweenaw National Historical Park
Our Staff & Offices
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Did You Know?
Keweenaw copper milling facilities were normally located along lake shorelines because they used large volumes of water in the miiling process and the lakes served as dumping site for the waste material known as stamp sand. Access to the lake also facilitated shipping and receiving of supplies
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Last Updated: December 01, 2009 at 12:03 EST |