The plant, one of five canyons built to process plutonium at Hanford, operated from 1956 to 1972 and then from 1983 to 1988. By 1998 the plant had been deactivated, with work that included ...

Hanford workers have removed all the ... workers repeatedly entered the contaminated four-story canyon of the plant’s Plutonium Reclamation Facility to repair the crane used in the Cold War.

Purex is a contraction for plutonium uranium extraction. 1968-Separation of nuclear products which have been created in irradiated fuels at Hanford is accomplished in long concrete canyon buildings.

Hanford workers have completed the final pipeline link between radioactive waste tanks and a vitrification plant set to start ...

A millionth of a gram of plutonium has a measurable risk of causing a lethal lung cancer,” said Kaltofen. Hanford workers said ... negative ventilation on the canyon during demolition; and ...

The interior canyon, where tall skinny tanks holding plutonium hung along the walls ... debris can be sent to a lined landfill in central Hanford. But some material will have to be packaged ...

A new federal report says that a massive building at the Hanford Nuclear Site is worse off than managers thought. The so-called PUREX — Plutonium Uranium Extraction — plant isn't clean.