Workers at the Hanford Nuclear Reservation have started injecting grout into a partially collapsed tunnel that contains radioactive wastes left over from the production of nuclear weapons. The grout ...

It will take an estimated 650 truckloads of grout to fill the tunnel adjacent to the closed Plutonium Uranium Extraction Plant, which produced most of the plutonium for the nation's nuclear arsenal, ...

Hanford workers pump grout into a port on Tunnel 2. The tunnel is being sealed up so to lessen the risk of collapse that could endanger workers and the public. CREDIT ...

A flood emergency is underway in western Washington as several communities are underwater from historic rains. by Associated Press RICHLAND, Wash. (AP) - The U.S. Department of Energy has decided a ...

Workers have finished filling with grout a partially collapsed tunnel holding radioactive waste at the Hanford nuclear reservation. The concrete-like grout was injected into the top of the tunnel with ...

The Department of Energy plans to prevent a collapse of a Hanford waste storage tunnel by filling it with grout. It is shown under construction in 1964 when it was being built for temporary storage of ...

The second Hanford PUREX plant tunnel storing highly radioactive waste has been stabilized to prevent a collapse. Work to fill the tunnel with concrete-like grout began in early October and was ...

FILE - In this May 9, 2017 file photo, signs are posted by the Hanford Nuclear Reservation in Benton County, in Richland, Wash. The U.S. Department of Energy said Wednesday, Oct. 4, 2017 that workers ...

This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story in ...

Signs are posted by the Hanford Nuclear Reservation in Richland, Wash. The U.S. Department of Energy says there is a high risk that a second tunnel filled with radioactive waste might collapse on the ...