Hanford officials say unusual radiation readings that led them to declare an emergency operations alert last month came from old contamination.
Two Hanford workers were sent to a hospital Thursday morning as a precaution after developing respiratory symptoms that might be linked to chemical vapors from underground waste tanks.
An alert at Hanford sent four workers to the hospital. Radiation was detected while moving waste. This led to a rare emergency operations alert.
An emergency operations alert was activated at Hanford overnight after radiation was detected during a transfer from a waste tank.
Washington Attorney General Bob Ferguson says an appeals court decision on a nuclear repository in Nevada is good news for people who want a permanent place for Hanford waste.
More than 1,000 union workers at the nation's most contaminated nuclear site have rejected contract offers from five cleanup companies there.
An emergency siren will be tested on the U.S. Department of Energy's Hanford Site on Thursday, July 18, 2013.
The state of New Mexico has declined the Department of Energy's request for quick approval of a proposal to bring radioactive waste from Washington state's Hanford Nuclear Reservation to the Waste Isolation Pilot Plant near Carlsbad.
The U.S. Department of Energy (DOE) has agreed to improve waste handling practices and pay $136,000 in a settlement announced Tuesday by the U.S. Environmental Protection Agency.
For months now the KING 5 Investigators have exposed a Hanford contractor that may be putting your safety at risk. Action News is teaming up with KING 5 Seattle to dig deeper into Hanford's dirty secrets.
KING 5 investigators spent months looking into decisions made by Washington River Protection Solutions and whether it looked the other way when evidence showed there was a major problem on their hands.
The leak of AY-102 might make you wonder why this tank is so important. Continuing the investigation into Hanford's dirty secrets, Susannah Frame looked at why this double-shell tank is such a single risk.
KING 5 investigator Susannah Frame looked at whether bonus money is trumping safety at Hanford.
The investigative arm of congress is not happy with the way your dollars are being spent. Gary Chittim found the government accountability office has some real concerns about the agency running the cleanup at the site.
Susannah Frame looked into what would happen if a leak like that was ever discovered. She found Washington River Protection Solutions had no plan in place when an alarm signaled a double-shell tank was leaking dangerous waste.