Steel beams running the length of a Hanford waste storage tunnel were bolted to concrete arches, shown as they were being built  over the outside of the tunnel. The possible collapse of the tunnel is both more likely than thought a year ago and the effects potentially more severe.
Steel beams running the length of a Hanford waste storage tunnel were bolted to concrete arches, shown as they were being built over the outside of the tunnel. The possible collapse of the tunnel is both more likely than thought a year ago and the effects potentially more severe. Courtesy Department of Energy
Steel beams running the length of a Hanford waste storage tunnel were bolted to concrete arches, shown as they were being built over the outside of the tunnel. The possible collapse of the tunnel is both more likely than thought a year ago and the effects potentially more severe. Courtesy Department of Energy

Second Hanford radioactive tunnel collapse expected. And it could be more severe

August 28, 2018 07:14 PM