engineering
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The U.S. Built Only Three Steel Dams. One Is in the Keweenaw — and the Wooden Dam It Replaced Outlasted It.
The Redridge Steel Dam is one of only three steel dams ever…
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Everyone North of Houghton Lives on an Island. One Bridge Is the Only Way On — and It’s the Heaviest of Its Kind on Earth.
The Keweenaw Waterway makes the northern Keweenaw an island, and the Portage…
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Manistique Built a Road Four Feet Below the River It Crosses. Ripley’s Put It in “Believe It or Not.”
A paper mill needed water power, a dam would have flooded the…
