wonders2 - London Tower Bridge London First First Moveable...

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Unformatted text preview: London Tower Bridge London First First Moveable Bridge Across Thames Thames 1894 Span - 800 feet Span Chesapeake Bay Bridge-Tunnel Chesapeake Total Length - 17.5 miles Two Mile-Long Tunnels Aircraft Carriers, Tankers, Etc. Tunnels Tunnels Orwigsburg (1821) - Auburn, Penn 450 feet - First In US Mont Cenis (1871) - France To Italy 8.5 miles - First Railroad Tunnel Simplon (1922) - Switzerland To Italy 12.3 miles - “Most Famous In World” New York Tunnels Holland (1927), Lincoln (37,45,57) Channel Tunnel (1993 ?) 21 miles Dams Dams Types Gravity, Arch, Butress, Embankment Combined Types Egypt - 4000 BC Nile River - City of Memphis Grand Coulee Dam Hoover Dam Aswan High Dam Grand Coulee Dam (1933-42) Grand Washington Lead States in Hydroelectric Power Gravity Dam - Columbia River 550 feet High, 4172 feet Long 6.5 Million kW by 1980 ...
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