tunnel

Agency Will Fill Collapsed Nuclear Waste Tunnel With Grout
RICHLAND (AP) — The U.S. Department of Energy has decided a partially collapsed tunnel containing radioactive waste will be filled with a concrete-like grout.
The tunnel is located on the Hanford Nuclear Reservation in Washington state, and contains wastes left over from the production of pluto…
Crews Cover Partially-collapsed Tunnel at Nuclear Site
SPOKANE (AP) — Workers have placed a protective cover over a partially-collapsed tunnel filled with radioactive waste on the Hanford Nuclear Reservation.
The U.S. Department of Energy said workers finished installing the cover over the weekend at the former plutonium production site near Richla…
Energy Chief Pledges Investigation Into Collapse
RICHLAND  (AP) — U.S. Energy Secretary Rick Perry says his agency will conduct a study to determine what led to the collapse of a tunnel at Hanford Nuclear Reservation in Washington state.
Perry said Wednesday that the tunnel obviously deteriorated and the question that needs to be answere…
Giant Drill Boring Seattle Tunnel Nears Finish Line
SEATTLE (AP) — Twenty-nine months late, the massive drill boring a new Highway 99 tunnel below Seattle is almost done with its work.
The Seattle Times reports that the drill, known as "Bertha," is expected to chew through a concrete retaining wall in the next few days and emer…
Seattle Tunnel Machine Begins Work Again
SEATTLE (AP) — The machine digging a tunnel to replace Seattle's Alaskan Way Viaduct has resumed work.
State transportation officials said the boring machine, known as Bertha, resumed mining Tuesday after the state allowed the work to continue. Las...