Harry K. Daghlian, Jr.
Haroutune Krikor Harry Daghlian Jr. was a physicist with the Manhattan Project which designed and produced the atomic bombs that ended World War II. He accidentally irradiated himself on August 21, 1945, during a critical mass experiment at the remote Omega Site of the Los Alamos Laboratory in New Mexico, resulting in his deathdays later.
Haroutune Krikor Daghlian Jr., of Armenian American extraction, was born in Waterbury, Connecticut, on May 4, 1921, one of three children of Margaret Rose and Haroutune Krikor Daghlian. He had a sister, Helen, and a brother, Edward. Soon after his birth the family moved across state to the coastal town of New London, Connecticut. He was educated at Harbor Elementary School, where he played violin in the school orchestra, and at Bulkeley High School. In 1938, at the age of 17, he entered the Massachusetts Institute of Technology, intending to study mathematics, but became interested in physics, particularly particle physics, then emerging as an exciting new field. This led him to transfer to the West Lafayette, Indiana, campus of Purdue University, which graduated him in 1942 with a bachelor of Science degree. He then commenced work on his doctorate, assisting Marshall Holloway with the cyclotrons. In 1944, while still a graduate student, he joined Otto Frischs Critical Assembly Group
Source: Wikipedia