Nuclear Museum Logo
Nuclear Museum Logo

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.

Related Profiles

Richard H. Groves

Washington, DC

General Richard Groves was a cadet at West Point during World War II, getting ready to ship out for the invasion of Japan.

John H. Manley

Los Alamos, NM

John Henry Manley (1907-1990) was an American physicist. Manley worked on the Manhattan Project almost from its beginning, starting at the Metallurgical Lab at the University of Chicago.

Roger Cloutier

Oak Ridge, TN

Roger Cloutier was born in North Attleborough, Massachusetts in 1930. After serving in the U.S. Navy during the Korean War, he pursued a career in health physics at the University of Massachusetts and University of Rochester.

G. Robert Gunther-Mohr

Washington, DC

G. Robert Gunther-Mohr joined the Manhattan Project in 1944. Mohr worked on the top secret polonium trigger being developed for the plutonium bomb at the Monsanto Chemical Company in Dayton, Ohio.