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National Museum of Nuclear Science & History

J. Samuel (“Sam”) Walker is the former historian of the U.S. Nuclear Regulatory Commission and the author of Prompt and Utter Destruction: Truman and the Use of Atomic Bombs against Japan. He is also the author of five books on the history of regulating nuclear power, including Three Mile Island: A Nuclear Crisis in Historical Perspective and The Road to Yucca Mountain: The Development of Radioactive Waste Policy in the United States.

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Robert Krauss

Robert “Bob” Krauss is the Official Historian of the 509th Composite Group. He and his wife, Amelia Krauss, published The 509th Remembered, which profiles the service members of the 509th Composite Group and the events that surrounded the group and its role in dropping the atomic bombs on Hiroshima and Nagasaki.

William L. “Bud” Uanna

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William Lewis "Bud" Uanna played a critical role in maintaining security of the atomic bomb project.

Darrell Dvorak

Trinity Site

Darrell Dvorak’s father-in-law, Colonel Clifford John Heflin, worked for the Manhattan Project.

Tony Essaye

Washington, DC

Tony Essaye was born in London, England but grew up in the U.S. after being evacuated during World War II.