Roosevelt dedicates the great dam on the Colorado, two years ahead of schedule
Construction on the dam in the Black Canyon had run for four years. On September 30, 1935, President Franklin D. Roosevelt stood before the finished dam straddling Arizona and Nevada and formally dedicated it, calling it Boulder Dam rather than the name President Hoover's administration had first given it. The concrete had gone in for the last time four months earlier, and Lake Mead had already begun rising behind the wall. Six Companies, Inc. had built it two years ahead of schedule, in the depths of the Great Depression…
