The Manhattan Project

Tinian Island

Benjamin Bederson

Benjamin Bederson, a New York native, was selected to serve in the Special Engineering Detachment during the Manhattan Project. A physicist, he was first sent to Oak Ridge, and then to Los Alamos, where he worked for Donald Hornig on designing the ignition switches for the implosion bomb. At Los Alamos, he knew Ted Hall and David Greenglass, who were secretly sending atomic bomb secrets to the USSR. Bederson instructed the 509th Composite Group at Wendover and was sent to Tinian to help wire the switches for the bomb.

Larry DeCuir's Interview

Cindy Kelly:  I’m Cindy Kelly, Atomic Heritage Foundation. This is Wednesday, February 22, 2017. We’re in Encino, California, and I have with me Larry DeCuir. I first want you to tell me your full name and spell it, please.

Larry DeCuir: Laurence Edwin DeCuir. L-A-U-R-E-N-C-E, Edwin is E-D-W-I-N, and DeCuir is D-E-C-U-I-R. It translates to “of leather” in French. If you go to Montreal, you’ll see a lot of shops with my name on the window. I don’t own those shops. They handle leather.

Nancy K. Nelson's Interview

Cindy Kelly: I’m Cindy Kelly. I am in Riverside, California. It is Tuesday, February 21, 2017. I have with me Nancy Nelson. I’d like her to say her name and spell it.

Nancy Nelson: My name is Nancy Nelson, N-A-N-C-Y N-E-L-S-O-N.

Kelly: Tell me a little bit about yourself, so we can put this in context.

Nancy K. Nelson

Nancy K. Nelson is the widow of Richard H. Nelson, who was the VHF radio operator when on the Enola Gay on the Hiroshima atomic bombing mission. In this interview, Nelson discusses how she met her husband after the war. She describes his experience training to be radar operator and in the 509th Composite Group. She recalls how he and other members of the missions felt about the atomic bombings.

John Coster-Mullen's Interview

Cindy Kelly: I’m Cindy Kelly. This is January 30th, 2017. We’re in Washington, D.C., and I’m with John Coster-Mullen. I want to start by asking him to say his name and spell it, please.

John Coster-Mullen: John Coster-Mullen, J-O-H-N C-O-S-T-E-R-M-U-L-L-E-N.

Kelly: Great. Some have called you “Atomic John.”

Coster-Mullen: Yes. 

Russell E. Gackenbach's Interview

Alexandra Levy: We are here on December 27th, 2016, in Florida, with Russell Gackenbach. My first question for you is to please say your name and spell it.

Russell Gackenbach: My name is Russell E. Gackenbach. G-A-C-K-E-N-B-A-C-H.

Levy: Please tell us your place and date of birth.

Gackenbach: I was born in Allentown, Pennsylvania, March 1923, on March 23.

Russell E. Gackenbach

Russell E. Gackenbach was a navigator in the 393rd Bombardment Squadron and 509th composite group. He flew on both the Hiroshima and Nagasaki missions. His crew flew aboard the Necessary Evil, which was the camera plane for the Hiroshima mission. Gackenbach photographed the mushroom cloud over Hiroshima. His crew flew again during the Nagasaki mission as the weather reconnaissance plane for the city of Kokura. 

Robert Serber's Interview (1982)

Martin Sherwin: I’m interviewing Robert Serber at his home in New York City. Date is January 9th, 1982.

Let me just begin at the beginning and ask you, how did you get to Berkeley? Why did you go there?

Serber: I got my degree at Wisconsin with [John] Van Vleck, and that was ’34. You didn’t have very many choices of what you can do. But I got a National Research Fellowship, which, if I recall, there were only five of them available that year. That was a year when the new membership of the American Physical Society was thirteen.

Jack Widowsky's Interview

Alexandra Levy: We are here on June 13th in New Jersey with Jack Widowsky. This is Alex Levy with the Atomic Heritage Foundation. My first question for you, Jack, is to please say your name and to spell it.

Jack Widowsky: My name is Jack Widowsky. J-A-C-K, which is easy, but the last name is W-I-D-O-W-S-K-Y.

Levy: Can you please tell me where you were born and when?

Widowsky: I was born in Newark, New Jersey, on September 10, 1922.

Jack Widowsky

Jack Widowsky served as the navigator on the B-29 Top Secret at Wendover and Tinian during World War II. He participated in the mission to bomb Hiroshima as the navigator of the Big Stink, which was the backup strike plane on Iwo Jima. He flew as the navigator of the Laggin' Dragon, one of the weather reconnaissance planes, during the mission to Nagasaki. In this interview, he discusses his time in the 509th Composite Group. He begins by narrating his introduction to the 509th after enlisting in the Air Force.

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