Stock Photo - 60-inch cyclotron at the University of California, Berkeley. June 8, 1940. The atom-smasher was the most powerful in the world in August 1939. At far left is Dr. Edwin McMillan, who was to discover a new element, neptunium. The man at far right is possibly Philip Hauge Abelson - (BSLOC-2015-1-80)

Stock Photo: 60-inch cyclotron at the University of California, Berkeley. June 8, 1940. The atom-smasher was the most powerful in the world in August 1939.

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