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Outstanding Bradley, as a result of the Manhattan Project between 500,000 and 750,000 American soldiers lives were saved, along with the millions of Japanese lives saved if we would have had to invade the island to end the war.

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Outstanding Bradley, as a result of the Manhattan Project between 500,000 and 750,000 American soldiers lives were saved, along with the millions of Japanese lives saved if we would have had to invade the island to end the war.

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Grandpa Buz

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Very professional report. Technology is a very powerful tool and must be respected with great caution.

Steven

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An instrumental  part of our history. I wish we still had the advantage in this area of weaponry. Pray that good judgement is used by all countries.

Dad

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Great job on this important time in our nation's history.         Uncle Scott

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Great job on this important time in our nation's history.         Uncle Scott

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Excellent research on The Manhattan Project!

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"I knew what I was doing when I stopped the war.... I have no regrets and, under the same circumstances, I would do it again."

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"I knew what I was doing when I stopped the war.... I have no regrets and, under the same circumstances, I would do it again."

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Harry S. Truman, 1963

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General Leslie Groves said "The war's over. One or two of those things and Japan will be finished."

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General Leslie Groves said "The war's over. One or two of those things and Japan will be finished."

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The Manhattan Project cost two billion dollars and employed tens of thousands of people. This was a huge boon the economy. The lasting impact of the Manhattan Project is on history, science and medicine, space exploration, electricity, and much more. With the breakthroughs in various science fields, including physics, chemistry, biology, medicine and medical imaging, the economic implications are global and far reaching still today. Additionally, the Manhattan Project is the predecessor of the Atomic Energy Commission, the Energy Research and Development Administration and the Department of Energy. These agencies employ thousands. Their research is significant and long lasting. One example is the effect that nuclear medicine has had on fighting a variety of diseases, including cancers, heart disease, gastrointestinal, neurological and other disorders within the human body. This even furthers the economic impact of the Manhattan Project from so many years ago!

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In 1939, FDR was made aware that German scientists were racing to build an atomic bomb and Hitler would use it. FDR set up a committee to study uranium. In 1940, FDR established the National Defense Research Committee that would have access to money for nuclear research. Early studies were on radar, proximity fuzes and anti-submarine warfare with continued work on isotope separation and chain reaction work. In June 1941, an Executive Order was signed for another research committee to strengthen the scientific presence in the federal government. The new committee advised the uranium committee with the secret code name S-1. Soon the Army Corps of Engineers participated in the S-1 meetings. Going forward there was a need for security within the program. The Corps had expertise in construction which would be needed to build facilities for making the atomic bomb. This changed the nature of the atomic bomb from one dominated by research scientists to one in which scientists played a supporting role in the construction run by the U.S. Army Corps of Engineers. The S-1 committee needed to move forward in record time. They built a plant in Tennessee at site X. During this time Enrico Fermi was conducting research on chain reactions. In December, 1942 a pile of 400 tons of graphite, six tons of uranium metal, and fifty tons of uranium oxide achieved the first self-sustaining chain reaction. On Dec. 28, 1942, FDR approved the authorization for the Manhattan Project to build full scale gaseous diffusion, plutonium and electromagnetic plants.

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The Manhattan Project became an important element in American strategy to bring an end to WWII. Because the Japanese would fight to the bitter end, a costly invasion of the islands seemed likely. Japan was given a formal warning to surrender unconditionally or face "prompt and utter destruction" by the United States. The Potsdam Proclamation promised that they could design their own government as long as it was peaceful and democratic. Japan wanted to surrender but could not accept the Potsdam Proclamation. American policy makers concluded that the atomic bomb must be used. Hiroshima placed first on the list as it was a city without American prisoners. In the early morning of Aug. 6, 1945, the bomber, Enola Gay released the 9,700 pound uranium bomb nicknamed Little Boy above Hiroshima. Little Boy detonated causing total devastation for five miles. Japan was warned that if it still refused to surrender unconditionally, the U.S. would attack additional targets with equal devastation. With no surrender forthcoming, a second atomic attack took place on Nagasaki. The single payload, a plutonium bomb weighing 10,000 pounds was nicknamed Fat Man. Three square miles of Nagasaki were destroyed. Japan surrendered on Aug. 14, 1945. This ended the war that began for the United States with the surprise attack on Pearl Harbor on December 7, 1941.

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The Manhattan Project Explanation:  This Project was a code name for a secret research and development program whose goal was to build an atomic weapon during World War II. Scientists learned how to split the nuclei of certain elements. They also discovered that this process of nuclear fission released tremendous energy.

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The Manhattan Project Explanation:  This Project was a code name for a secret research and development program whose goal was to build an atomic weapon during World War II. Scientists learned how to split the nuclei of certain elements. They also discovered that this process of nuclear fission released tremendous energy.

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The Manhattan Project Develops the A-Bomb

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The Manhattan Project Develops the A-Bomb