The Hanford Nuclear site in South Central Washington State is the most polluted radioactive waste dump in the country. At the center of the Hanford reservation are hundreds of buried tanks that hold waste left over from plutonium production during World War 2 and the Cold War. A multi year, multi billion dollar clean up is underway. But there are problems: an accidental spill of tank waste shut down clean up for nearly a year. Recently, the Government Accountability Office (GAO) raised concerns about how much longer the aging underground tanks can hold up. Correspondent Austin Jenkins reports in the first of a two part series on Hanford clean up efforts.
