The Hoover Dam : America’s Engineering Miracle April 16, 2020 Unipro2013main Did you Know </p> <h2>America’s Engineering Miracle</h2> <p> Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin D. Roosevelt.</p> <p> </p> <p>Credit to : Geographics</p> <p> Please support our Sponsors here :
