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The Word of Scientist
American scientists conclude that plutonium can be used as a weapon in the form of a bomb. The president was interested in using the plutonium once it was successful. -
Authorization
President Roosevelt authorizes the Manhattan Project to develop atomic weapons which are deadlier than plutonium. -
Japan Attacks
Japanese forces attack the Unites States Naval base at Pearl Harbor, Hawaii, thus bringing the United States into World War Two. -
Construction Began
Construction of the bombs begins on The Hanford Site, in Washington State. -
The First Set of Bombs Ready
The first batch of plutonium from Hanford's reactors is ready for testing. -
Bombs Set and Ready
The first batch of Uranium-235 is successfully separated at Oak Ridge National Laboratory in Tennessee. -
President Roosevelt Dies
President Franklin D. Roosevelt dies. Vice-President, Harry S Truman, becomes the 33rd President of the United States. Truman spent his first couple of weeks as President completely unaware of the atom bombs currently in development. -
Heavy Decisions
There was a meeting held to determine which Japanese city was the perfect place to drop the bomb. -
Surrender or Be Bombed
The U.S wanted Japan to surrender, at the time Japan did not know the atomic bomb was ready, so they responded with silence. -
The U.S Attacks
Commanded by Colonel Paul Tibbets, drops a 15 kiloton atomic bomb nicknamed Little Boy over the Japanese city of Hiroshima. Approximately 130,000 people died in the explosion and the immediate after-effects of the attack. -
The U.S Attacks Again
Commanded by Major Charles Sweeney, dropped a 21 kiloton atomic bomb on the Japanese city of Nagasaki. -
Japan Surrenders
The Japanese decided to surrender to the U.S with a plan of war in mind.