Reports & Papers from Managing the Atom Project, Belfer Center Published: August 15, 2013 Introduction WATCH: At a recent seminar at the Belfer Center for Science and International Affairs, co-authors Eben Harrell and David E. Hoffman share the inside story of their 'Plutonium Mountain' report On the desolate steppe of eastern Kazakhstan, the Soviet Union carried out 456 nuclear explosive tests during the Cold War at the Semipalatinsk Test Site, which sprawls over an area approximately the size ...