Today in World War II History—November 4, 1943
Saturday, November 4, 2023 by Sarah Sundin

Shift change at the Y-12 uranium enrichment facility in Oak Ridge, Tennessee, during the Manhattan Project, 1945 (US Department of Energy photo)
80 Years Ago—Nov. 4, 1943: Plutonium processing plant opens at Oak Ridge, Tennessee, for atomic bomb development as the X-10 graphite reactor, the world’s first full-scale reactor, reaches criticality.