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The Approval of the Atomic Bomb
President Franklin D. Roosevelt approves the production of an atomic bomb after the world's best scientists warn that Germany is harnessing nuclear force for warfare. https://www.knoxnews.com/story/news/2020/08/05/10-events-75-years-later-looking-back-atomic-attacks-hiroshima-nagasaki-world-war-ii/5574979002/ -
Gettting Started
The Manhattan Engineer District, also known as the Manhattan Project, is established. Scientists and the military start working together to build an atomic bomb. https://www.knoxnews.com/story/news/2020/08/05/10-events-75-years-later-looking-back-atomic-attacks-hiroshima-nagasaki-world-war-ii/5574979002/ -
The Process
Col. Leslie Groves is put in charge of the newly formed Manhattan Project. That month, he decides to buy 59,000 acres of land in East Tennessee for a production site. https://www.knoxnews.com/story/news/2020/08/05/10-events-75-years-later-looking-back-atomic-attacks-hiroshima-nagasaki-world-war-ii/5574979002/ -
Closed To The Public
The Oak Ridge lab is closed to the public. Only the 30,000 employees and authorized personnel can enter https://www.knoxnews.com/story/news/2020/08/05/10-events-75-years-later-looking-back-atomic-attacks-hiroshima-nagasaki-world-war-ii/5574979002/ -
They Find Out
President Harry Truman learns of the existence of the atomic bomb program from Secretary of War Henry Stimson two weeks after he takes office https://www.knoxnews.com/story/news/2020/08/05/10-events-75-years-later-looking-back-atomic-attacks-hiroshima-nagasaki-world-war-ii/5574979002/ -
Bomb completion
The Bomb is completed -
Who Invented the Atomic Bomb?
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First Time an Atomic Bomb was used?
Paul Tibbets and Robert Lewis fly a bomber Enola Gay over Hiroshima, Japan, with an armed bomb. They drop the bomb, code named "Little Man," over the city, and it explodes. An estimated 80,000 people die that day, and 60,000 more die within the year because of complications caused by the nuclear explosion. https://www.knoxnews.com/story/news/2020/08/05/10-events-75-years-later-looking-back-atomic-attacks-hiroshima-nagasaki-world-war-ii/5574979002/