The Manhattan Project

Cold War Nuclear Tests

J. Carson Mark's Interview

Carson Mark: We shouldn’t have been making this damn bomb without trying to keep it secret from [Joseph] Stalin. We should’ve been talking to him like [Niels] Bohr said. [Klaus] Fuchs believed and took it into his own hands to make sure that the conversation went on. Of course, he didn’t need to because Stalin knew anyway. Not the technical details, but the general facts.

Louis Rosen's Interview

Rosen: Well, my name is Louis Rosen. I was born in New York City, not the best part of the city. I’m now almost eighty-five years old. My parents were immigrants from Poland.  They were escaping from the pogroms, which were taking place with the Russian Cossacks coming in and raiding villages, especially where Jews where plentiful. My father came over here in about 1909. My mother—they were girl and boyfriends in the old country—came over two years later.

Louis Rosen

Louis Rosen, a native New Yorker and the son of Polish immigrants, was personally selected to work on the Manhattan project in Los Alamos while a graduate student in physics. Once in Los Alamos, Rosen was assigned to Edwin McMillan’s group, where he worked on implosion technology. Rosen remained in Los Alamos after the war ended and was considered the father of the Los Alamos Meson Physics Facility. 

Stanislaus Ulam's Interview (1983)

Richard Rhodes: An interview with Dr. Stanislaw Ulam in Santa Fe, New Mexico, July 6, 1983.

Rhodes: Well I have some questions for you.

Ulam: Yes, of course. How long are you staying?

Rhodes: I am going to be in the area for until Saturday morning. It would be pleasant to see more of you. I thought I would go out to Los Alamos today and stay up there.

Ulam: There is a hotel.

Albert Bartlett's Interview

Albert Bartlett: I started school in a little college in Ohio and then I dropped out for a while. Then I applied to transfer to Colgate. I was working on steamboats on the Great Lakes, and I was accepted. A steamboat was coming in to Cleveland, and I just told them I was leaving and going back to college. Of course, the war was on. I was on the first ship the day of Pearl Harbor and so I knew, you know, I was a perfect draft age and I was all registered for the draft.

Albert Bartlett

Albert Bartlett worked with mass spectrometers at Los Alamos during the Manhattan Project. He was part of the group that photographed the Operations Crossroads nuclear tests in the Bikini Atoll after the war.

Isabella Karle's Interview (2015)

Alexandra Levy: Okay. We’re here in Virginia on March 25, 2015 with Isabella Karle. Our first question is to please state your name and spell it.

Isabella Karle: My name is Isabella Karle, I-S-A-B-E-L-L-A, and the last name, K-A-R-L-E.

Levy: Great. If you could tell us a little bit about where you were born and when?

Karle: I was born in Detroit, Michigan on December 2, 1921.

Levy: Did you grow up in Detroit?

Hal Behl

After receiving his bachelor’s degree in Aeronautical Engineering from New York University, Hal Behl registered with the National Roster of Scientific and Specialized Personnel and was drafted into the Army. Although he was first placed in an infantry training unit, he was ultimately assigned to the Army Special Engineering Detachment and stationed at Oak Ridge.

Raemer Schreiber's Interview (1993)

Raemer Schreiber: Yes, there was at least one [bomb core], and people back here worked furiously taking the plutonium as it arrived and converting it into another core. I don’t know the answer to it. I have heard stories another core was on its way out at the time of the surrender.

Richard Rhodes: Groves decided not to ship it. I’ve seen the document.

George Cowan's Interview (1993)

George Cowan: What you’ve learned from the Russians, for example?

Richard Rhodes: The main thing I have learned is that their first bomb was a carbon copy of Fat Man.

Cowan Cowan: Well of course. I knew that in 1949, about the middle of September of ’49 because we analyzed the debris from that and it was clear that it was a carbon copy.

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