In this July 9, 2014 file photo, a sign informs visitors of prohibited items on the Hanford Nuclear Reservation near Richland, Wash. An emergency has been declared Tuesday, May 9, 2017, at the Hanford Nuclear Reservation after a portion of a tunnel that contained rail cars full of nuclear waste collapsed. Randy Bradbury, a spokesman for the Washington state Department of Ecology, said officials detected no release of radiation and no workers were injured.
In this July 9, 2014 file photo, a sign informs visitors of prohibited items on the Hanford Nuclear Reservation near Richland, Wash. An emergency has been declared Tuesday, May 9, 2017, at the Hanford Nuclear Reservation after a portion of a tunnel that contained rail cars full of nuclear waste collapsed. Randy Bradbury, a spokesman for the Washington state Department of Ecology, said officials detected no release of radiation and no workers were injured. Ted S. Warren AP
In this July 9, 2014 file photo, a sign informs visitors of prohibited items on the Hanford Nuclear Reservation near Richland, Wash. An emergency has been declared Tuesday, May 9, 2017, at the Hanford Nuclear Reservation after a portion of a tunnel that contained rail cars full of nuclear waste collapsed. Randy Bradbury, a spokesman for the Washington state Department of Ecology, said officials detected no release of radiation and no workers were injured. Ted S. Warren AP

The Cold War's legacy: toxic waste cleanup

March 13, 2018 09:30 AM