Credit: Courtesy of the Pennsylvania State Archives
After the accident at Three Mile Island, fears about a meltdown and devastating release of radioactive gases gripped the eastern United States. It was the job of Harold Denton, Director of the Office of Nuclear Reactor Regulation (standing on the left), to inform Governor Thornburgh and President Jimmy Carter about discovery of the hydrogen bubble at the top of the reactor pressure vessel, and the possibilities of a meltdown. When President Carter arrived on Sunday morning, April 1, experts still did not know whether the bubble would explode.
