Add Yahoo as a preferred source to see more of our stories on Google. A third aging underground tank at the Hanford nuclear site is suspected of leaking highly radioactive and hazardous chemical waste ...

FILE - In this Aug. 13, 2019, file photo, a sign at the Hanford Nuclear Reservation is posted near Richland, Wash. Officials say an underground nuclear waste storage tank that dates to World War II ...

An underground Hanford tank holding 123,000 gallons of radioactive waste appears to be leaking contaminated liquid into the ground, according to the Department of Energy. This is the second of Hanford ...

SPOKANE, Wash. (AP) — An underground nuclear waste storage tank in Washington state that dates to World War II appears to be leaking contaminated liquid into the ground, the U.S. Department of Energy ...

Two options that might speed up removal of radioactive waste from leaking underground storage tanks at Hanford will be evaluated, according to the terms of a settlement agreement reached Wednesday.

A committee that monitors waste management issues at the Savannah River Site is concerned that heightened levels of mercury in one of the site’s liquid waste tanks may become a recurring issue in ...

As the U.S. Dept. of Energy and its contractors rev up construction of permanent repositories for nuclear wastes now lingering in aging, corroded and heavily contaminated facilities at some of the ...

A third aging underground tank at the Hanford nuclear site is suspected of leaking highly radioactive and hazardous chemical waste into the ground, the Department of Energy said Thursday. “This is ...

SPOKANE – An underground nuclear waste storage tank in Washington state that dates to World War II appears to be leaking contaminated liquid into the ground, the U.S. Department of Energy said ...

An underground nuclear waste storage tank in Washington state that dates to World War II appears to be leaking contaminated liquid into the ground, the U.S. Department of Energy said Thursday. It's ...