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Harry Daghlian

Given NameHarry
Born4 May 1921
Died15 Sep 1945
CountryUnited States


ww2dbaseHaroutune Krikor Daghlian, Jr. was born in Waterbury, Connecticut, United States to Haroutune Krikor Daghlian, Sr. and Margaret Rose Daghlian (née Currie). His family moved to New London, Connecticut while Daghlian was still at a young age. He attended Harbor Elementary School and the Bulkeley School in New London before attending the Massachusetts Institute of Technology in Cambridge, Massachusetts, United States in 1938, studying mathematics. Before completing the program, his interest changed toward physics, thus he transferred to Purdue University in West Lafayette, Indiana, United States, where he would obtain his undergraduate degree in 1942. In 1944, as a student studying toward a doctorate degree, he joined the Manhattan Project at Los Alamos, New Mexico, United States under the leadership of Otto Frisch. On 21 Aug 1945, while attempting to build a neutron reflector by manually stacking 4.4-kilogram tungsten carbide bricks around a plutonium core, he accidentally dropped the last brick onto the core. Although he was able to disassemble the pile, he was not able to do so before receiving a lethal dose of radiation. He passed away less than a month later.

ww2dbaseSource: Wikipedia

Last Major Revision: Sep 2012

Harry Daghlian Timeline

4 May 1921 Harry Daghlian was born in Waterbury, Connecticut, United States.
21 Aug 1945 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.
15 Sep 1945 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.
20 May 2000 The city of New London, Connecticut, United States unveiled a memorial to Harry Daghlian, Jr. at Calkins Park.


American physicist Harry Daghlian

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American physicist Harry Daghlian

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