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When the 726-foot-high Hoover Dam was complete in 1935, it was the largest dam in the world. The ambitious government- sponsored project promised to change a barren southwestern desert in to a bountiful agricultural community by focusing its goals on flood control, irrigation, drinking water, and the procurement of electricity. In this in-depth program, Modern Marvels presents the dramatic and controversial history behind the building of the dam. Through archival footage, discover the immensity of the task at hand for the thousands of workers in involved, and revel in the innovative construction techniques that were required to finish the job on time.