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<p>the necessary materials for building a large-scale chain reaction experiment. The <a href="page.php?w=Metallurgical_Laboratory">Metallurgical Laboratory</a> at the University of Chicago was tasked with the completion of such a reactor, and Fermi moved there, continuing the pile experiments he began at Columbia. After many subcritical designs, <a href="page.php?w=Chicago_Pile-1">Chicago Pile-1</a> achieved <a href="page.php?w=Criticality_%28status%29">criticality</a> on December 2, 1942. The success of this demonstration and technological breakthrough</p><p>
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