Martin Kamen
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Martin David Kamen (1913 – 2002), was a discoverer of the isotope carbon-14 at the University of California Radiation Laboratory, Berkeley which was part of the Manhattan Project.
Kamen met with Grigory Kheifets and Grigory Kasparov, KGB officers at the Soviet San Francisco consulate. He was fired from the Manhattan Project in 1944 when security officers overheard him discussing atomic research with Kheifets.
Reference
- Report of 11 January 1944, FBI Silvermaster file, serial 3378;
- “Comintern Apparatus Summary Report”;
- “The Shameful Years: Thirty Years of Soviet Espionage in the Untied States,” 30 December 1951, U.S. Congress, House of Representatives, Committee on Un-American Activities, 39–40.
- John Earl Haynes and Harvey Klehr, Venona: Decoding Soviet Espionage in America, Yale University Press (1999), pgs. 232, 236.