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OSTIblog Articles in the World War II Topic

The Manhattan Project -- Its Immediate Influences

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The Manhattan Project -- Its Immediate Influences

With the Manhattan Project on the brink of success in spring 1945, the atomic bomb became an increasingly important element in American strategy to bring an end to World War II.

Because of the generally accepted view that the Japanese would fight to the bitter end, a costly invasion of the home islands seemed likely, even though some American policy makers held that successful combat delivery of one or more atomic bombs might convince the Japanese that further resistance was futile.  They contended that the bomb could...

Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, Japan, Manhattan Project, plutonium, uranium, World War II

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The Manhattan Project -- Its Operations

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The Manhattan Project -- Its Operations

Major operations for the Manhattan Engineer District (Manhattan Project) took place in remote site locations in the states of Tennessee, New Mexico, and Washington, with additional research being conducted in university laboratories at Chicago and Berkeley.

At the Metallurgical Laboratory in Chicago, Enrico Fermi's experiments at the CP-1 pile took place to determine the exact amount of neutron reduction needed for a safe and controlled sustained nuclear reaction.  A...

Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, electromagnetic, gaseous diffusion, Manhattan Project, nuclear chain reaction, plutonium, uranium, World War II

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The Manhattan Project -- Its Establishment

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The Manhattan Project -- Its Establishment

On August 13, 1942, the Manhattan Engineer District, whose name was based upon the geographical location of its headquarters, was established.  In September, the Army appointed Colonel Leslie R. Groves to head the effort.  Groves held that the exigencies of war required scientists to move from laboratory research to development and production in record time.  Though traditional scientific caution might be short-circuited in the process, there was no alternative if a bomb was...

Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, electromagnetic, fission, gaseous diffusion, Manhattan Project, nuclear chain reaction, plutonium, Roosevelt, uranium, World War II

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The Manhattan Project -- Its Background

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The Manhattan Project -- Its Background

This year is the 70th anniversary of the establishment of the Manhattan Project, a predecessor of the U.S. Department of Energy.  In honor of its impacts on science and history, a 'Manhattan Project' series on this blog will revisit various aspects of its background, establishment, operations, and immediate and long-term influences. The first of the series is about the background of the Manhattan Project.

During the fall of 1939, President F. D. Roosevelt was made aware of the possibility that German scientists...

Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, Manhattan Project, nuclear chain reaction, Roosevelt, uranium, World War II

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