6 Nov 1942
United States
United States
- Groves and Oppenheimer visited Los Alamos, New Mexico, United States and agreed that it was suitable as the location for Site Y for the Manhattan Project. ww2dbase [Operation Trinity and Manhattan Project | Los Alamos, New Mexico | CPC]
5 Apr 1944
United States
United States
- At Los Alamos, New Mexico, United States, Emilio Segrè received the first sample of reactor-refined plutonium from Oak Ridge, Tennessee, United States. He would soon discover that the spontaneous fission rate of this plutonium was too high for use in a gun-type fission weapon. ww2dbase [Operation Trinity and Manhattan Project | Los Alamos, New Mexico | CPC]
4 Jul 1944
United States
United States
- J. Robert Oppenheimer revealed Emilio Segrè's final measurements to the Manhattan Project scientists at Los Alamos, New Mexico, which concluded that the "Thin Man" design for a gun-type plutonium weapon was not feasible. ww2dbase [Operation Trinity and Manhattan Project | Los Alamos, New Mexico | CPC]
20 Jul 1944
United States
United States
- The staff at the Los Alamos site of the Manhattan Project shifted focus to work on the implosion mechanism for the atomic bomb. ww2dbase [Operation Trinity and Manhattan Project | Los Alamos, New Mexico | CPC]
10 May 1945
United States
United States
- Manhattan Project Target Committee met at Los Alamos, New Mexico, United States to compile a list of potential atomic weapon targets in Japan. ww2dbase [Atomic Bombing of Hiroshima and Nagasaki | Los Alamos, New Mexico | CPC]
21 Aug 1945
United States
United States
- At Los Alamos, New Mexico, United States, American physicist Harry Daghlian, Jr. of the Manhattan Project accidentally dropped a tungsten carbide brick onto a plutonium bomb core and received a fatal dose of 510 rems of radiation. ww2dbase [Harry Daghlian | Los Alamos, New Mexico | CPC]
29 Aug 1945
Photo(s) dated 29 Aug 1945
Photo(s) dated 29 Aug 1945
15 Sep 1945
United States
United States
- American Manhattan Project physicist Harry Daghlian, Jr., after receiving a fatal dose of radiation during an accident on 21 Aug, died from radiation poisoning in Los Alamos, New Mexico, United States. ww2dbase [Harry Daghlian | Los Alamos, New Mexico | CPC]
16 Oct 1945
United States
United States
- Robert Oppenheimer resigned as the director of the Los Alamos, New Mexico, United States facility of the Manhattan Project. ww2dbase [Operation Trinity and Manhattan Project | Robert Oppenheimer | Los Alamos, New Mexico | CPC]
17 Oct 1945
United States
United States
- Norris Bradbury succeeded Robert Oppenheimer as the director of the Los Alamos, New Mexico, United States facility of the Manhattan Project. ww2dbase [Operation Trinity and Manhattan Project | Los Alamos, New Mexico | CPC]
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"All right, they're on our left, they're on our right, they're in front of us, they're behind us... they can't get away this time."Lt. Gen. Lewis B. "Chesty" Puller, at Guadalcanal
