Underwater History in an 1890s Copper Mine #mines #abandonedmines #mineexploring #pnw #history | Ghost Towns and Mines of Washington
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Underwater History in an 1890s Copper Mine #mines #abandoned…
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Divers Discover Ancient Tunnels Leading to America's First Mines and Skeletons in Underwater Caves
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A time-lapse through an abandoned American Civil War mine. | Underground Birmingham
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Did you know these Civil War land mines even existed? It is vital to educate yourself before disgarding metal detecting finds. Because you may have a rare piece of HISTORY! | History Seekers
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During the Civil War a Brooklyn native named Sarah Mather revolutionized underwater exploration with her submarine telescope an invention that attached a telescope to a tube with a lamp to view the dark waters below Her first patent on April 16 1845 led to inspections of ship hulls underwater foundations and lost objects The Union Navy later used it to detect submerged Confederate threats including hidden underwater mines An improved version was patented on July 5 1864 marking a remarkable achie
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Gigantic Underground Mines - The Biggest Explosions of WWI | War History Online
Gigantic Underground Mines - The Biggest Explosions of WWI | War …
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