Simons, who had trained as a metallurgical engineer, readily admitted taking the radioactive material, but he claimed it was just a “souvenir” of his time at Los Alamos, which he left in July 1946. Flanked by two impassive FBI men wearing Humphrey Bogart fedoras, Simons talked freely with journalists after he’d been committed for trial. Unshaven and handcuffed, though still clutching his pipe, Simons seemed remarkably unfazed by his predicament. Under the Atomic Energy Act he faced a possible maximum sentence of five years in prison and a $10,000 fine. Just a few weeks earlier, the FBI had arrested Ethel and Julius Rosenberg in New York on suspicion of atomic espionage. They were both convicted the following year and, despite international pleas for clemency including from Einstein, the couple were subsequently executed in the electric chair.
From: The Plutonium Collector