he exact amount of fissionable material needed to maintain a fission chain reaction. Once Critical mass was obtained it compressed Plutonium and when the Plutonium was compressed enough, atoms from plutonium were split and it made an explosive bomb that could destroy a medium sized city.3 Security was tight on the Los Alamos site because there was fear that bomb secrets would be spread outside of the work place. There were many people that worked on the bomb that didn’t even know they were working on it, they just thought it to be another regular government job. The workers that were there could not use their given names outside of the Los Alamos base. Any mail that was sent was to be read before delivered and vise versa.5 The creation of the bomb that was believed to work and now only needed to be tested The Manhattan Project was the most funded project done up to this time, so it had to be tested to see if the scientific research had gone to good use. Testing for the first atomic weapon took place on July 16, 1945, at the Trinity test site in Alamogordo, New Mexico.3 The first atomic bomb was detonated. Small amounts of plutonium made a destructive force equal to 25,000 tons of TNT. The bomb vaporized the tower where it was dropped from. The bomb reached new heights by a mushroom cloud that was 41,000 feet high and shock-waves from the bomb were felt from at least 10,000 feet away from the test site. The blast was also heard or seen from at least 50 miles away. After the testing, and succession of this first atomic weapon, the world was changed forever on its ways of battle.3 Now that the bomb that was tested, it was ready to use for war. Another thing that now needed to be done with The Project, was what to do with the atomic bomb. By the time the atomic bomb was finished, the presidency had changed. President Roosevelt died of polio, so Harry S. Truman was left in charge of the decisions involving the bomb. The focus of the wa...