The Manhattan Project

In partnership with the National Museum of Nuclear Science & HistoryNational Museum of Nuclear Science & History

Thermal Diffusion Process

S-50 Plant

With both the K-25 and Y-12 plants suffering setbacks in the spring of 1944, Oppenheimer urged Groves to approve the construction of a thermal diffusion plant. The U.S. Navy had researched this method for three years and was already building a pilot plant of 100 columns in Philadelphia.  After reviewing Oppenheimer’s suggestions, Groves decided in late June 1944 to approve construction for what would become the S-50 Thermal Diffusion Plant. 

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