Helicopter flights over Hanford this month are expected to provide a detailed map of where radioactive waste and contamination lie in the 37 square miles at the center of the nuclear reservation.

HANFORD SITE — In the spring of 1943, the U.S. government seized 586 square miles of desert in southeast Washington and ordered everyone to pack up and move within 90 days.

The Hanford Site is the most polluted area in the US, though cleanup started decades ago. Estimates say it will take decades more and up to $640 billion to finish the job. The site just received ...

About 350 employees of the Plutonium Finishing Plant were released from the precautionary take cover about three hours after the air monitor device set up outside the demolition area sounded the ...

The Hanford Site joins Los Alamos, and Oak Ridge, Tennessee to form the new national park. While Reactor B has been open to the public for tours since 2009, officials are planning for that number ...