SPOKANE — After 19 years of work to safeguard nuclear waste dating from the Cold War, workers at a sprawling Washington state site have managed to remove virtually all of the radioactive waste from 16 ...

The sludge left over from the production of plutonium for nuclear weapons was transferred from the single-walled tanks into modern, double-walled tanks considered much safer, the U.S. Department ...

A deal to address two nuclear waste storage tanks that are leaking radioactive materials into the soil in Washington state was reached Thursday between the state and the U.S. Department of Energy.

For 42 years, tank AY-102 has stored some of the deadliest material at one of the most environmentally contaminated places in the country: the Hanford Nuclear Reservation.

The U.S. Department of Energy said liquid levels are decreasing in one of 177 underground tanks at the nuclear ... The tank in question contains about 447,000 gallons of sludge, a mixture of ...

When I visited Hanford in 2013, construction of the Waste Treatment Plant—which will pump nuclear sludge out of the tanks and turn them into a hardened, glasslike substance—was slow and rife ...

Tank B-109 is one of two aging tanks confirmed to be leaking waste into the soil above groundwater that moves toward the Columbia River. “The tank has been leaking for four years,” Pollet said.

A single-shell tank is shown under construction at the Hanford nuclear reservation. Construction on the tanks to store radioactive waste began in 1943.

The Senate on Thursday narrowly agreed to ease cleanup rules for tanks containing millions of gallons of highly radioactive waste from Cold War-era bomb making. IE 11 is not supported.

T-111 holds an estimated 397,000 (1,502,808 liters) gallons of waste; about 37,000 gallons (140,060 liters) is liquid waste within sludge. The Energy Department estimates Tank B-109 is leaking ...

A sign welcomes drivers to Hanford Nuclear Reservation in Benton County on Tuesday in Richland, Wash. (AP Photo/Manuel Valdes) SPOKANE — After 19 years of work to safeguard nuclear waste dating ...

After 19 years of work to safeguard nuclear waste dating ... Washington state site have managed to remove virtually all of the radioactive waste from 16 aging underground steel tanks at risk ...