According to Gyorgy, who invoked the Freedom of Information Act to open up the relevant Central Intelligence Agency (CIA) files, the CIA knew of the 1957 Mayak accident, but kept it secret to prevent adverse consequences for the fledgling US nuclear industry. "Ralph Nader surmised that the information had not been released because of the reluctance of the CIA to highlight a nuclear accident in the USSR, that could cause concern among people living near nuclear facilities in the USA." Only in 1992, shortly after the fall of the USSR, did the Russians officially acknowledge the accident.