Description given with photo: "Howard Hughes sits with his witnesses at Senate War Invest. Hearing. 1st row (l to r): Glen Odekirk & Thomas Slack; 2nd row (l to r): E. A. Peterman, Richard (?), & Howard Hughes; 3rd row (l to r): Edward Schwartz, John Parkinson, & John R. (?)."
Narrator affiliation: Physicist, First director, Lawrence Livermore Laboratory; Arms control negotiator; Director, Defense Dept. Research adn Engineering
An image of Parker Dam on the Colorado River at the California-Arizona border, 155 miles downstream from Hoover Dam. Parker Dam is commonly referred to as "the deepest dam in the world" because 73% of the dam's structural height is positioned below the original river bed. Note: Boulder Dam was officially renamed Hoover Dam in 1947.