The Manhattan Project

Scientific Discoveries

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. 

Roger Rohrbacher's Interview

Tell us your name.

Roger Rohrbacher: I'm Roger Rohrbacher. That’s R-O-H-R-B-A-C-H-E-R.

How did you come to Hanford?

Rohrbacher: In 1942 and '43, I was working for DuPont in an acid plant in Illinois and my buddies were disappearing. They ended up in Richland, so I got the map out and Richland, Pasco weren't even recorded on the map. I contacted them and I said, “What are you guys doing?”

They said, “We don't know.”

Roger Rohrbacher

Roger Rohrbacher was born in St. Paul, Minnesota on March 11, 1920. He graduated from Macalester College in 1942 with a degree in chemistry and physics. Rohrbacher joined the Manhattan Project and was sent to Hanford in early 1944. He worked as an instrument engineer at the B Reactor. Rohrbacher was tasked with measurign neutron flow and temperature pressure and radiation monitoring. 

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.

Irwin P. Sharpe's Interview

Cindy Kelly: I’m Cindy Kelly, Atomic Heritage Foundation, and it’s Friday, May 15, 2015, and I’m in Middlebury, Vermont, with Irwin P. Sharpe. And, my first question for him is to tell us your name and spell it.

Irwin Sharpe: Oh, I know that. Okay. It’s Irwin, I-r-w-i-n, initial P, Sharpe, S-h-a-r-p-e.

Murray Peshkin's Interview

Murray Peshkin:  Well, how did I get involved in the Manhattan Project? I was an undergraduate student at Cornell University. A group of about ten, who were studying physics. It was clear that we could not be kept out of the Army very long. They were looking for programs in which we could serve usefully. I really believed that there was something else behind it.

Murray Peshkin

Murray Peshkin is a Manhattan Project veteran and a physicist. He was recruited by the Army to assist the Manhattan Project at Los Alamos when he was an undergraduate student studying physics at Cornell.

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