First pile scientists at the University of Chicago on December 2, 1946, the fourth anniversary of their success.1913 views
Mushroom Cloud Forming1905 views
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Rados RDS-120 Geiger Counter1892 views
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George1867 views
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Union1817 views
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Chama1760 views
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Going Back on the Road Again1756 views
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PBMR Diagram1733 views
The 19th layer of graphite covering layer 18 containing slugs of uranium oxide. Parts of the wooden scaffolding and surrounding balloon cloth also are visible.1731 views