Anniversary of First Man Made Criticality – December 2, 1942

Anniversary of First Man Made Criticality – December 2, 1942 - See more at: http://ansnuclearcafe.org/2016/12/02/anniversary-of-first-man-made-criticality-december-2-1942/#sthash.XdgzK8ve.dpuf

http://ansnuclearcafe.org/2016/12/02/anniversary-of-first-man-made-criticality-december-2-1942/#sthash.XdgzK8ve.dpbs