Espionageurchin.7z

You can read more about George Koval's mission through the Atomic Heritage Foundation .

: Koval focused on the Urchin , the device responsible for initiating the nuclear chain reaction in the early atomic bombs. EspionageUrchin.7z

: Unlike many other atomic spies, Koval was never caught while active. His role only became public knowledge in 2007 when he was posthumously awarded the title of Hero of the Russian Federation. The 7z File Context You can read more about George Koval's mission

The FBI maintains records on other major historical espionage cases for those interested in similar stories. Major Cases - FBI EspionageUrchin.7z