Great Lakes Archives - The Archaeological Conservancy

Copper native to the Upper Peninsula of Michigan becomes brittle with repeated hammering, so heating the materials and shaping them—known as annealing—is an essential component of copper tool production. Here, Bebber shapes annealed copper into a point. Photo: Bob Christy / Courtesy of Kent State University

American Archaeology Magazine

New Understandings About Michigan’s Old Copper Complex

Susan BowdoinMar 4, 2025

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