Gregory Jaczko Resigns as U.S. NRC Chairman After Three Year

Gregory Jaczko Resigns as U.S. NRC Chairman After Three Year

Ronald Zak/AP Photo

Gregory Jaczko, chairman of the U.S. Nuclear Regulatory Commission, at a press briefing at the Ministerial Conference on Nuclear Safety at the International Atomic Energy Agency, IAEA, in Vienna, Austria, on June 21, 2011.