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.

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.

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 ...

The cleanup of Hanford 100 Areas D and H, near the Columbia River, has been under way since the mid-1990s, a portion of a much larger response to the pollution from decades of plutonium-fuel ...

In a demonstration project, CH2M Hill Hanford Group is using electricity in a process called high-resolution resistivity to map contamination at the federal nuclear reservation's tank farms. Skip ...

A tunnel collapsed at Hanford today. Read on. What was stored in those tunnels? There are two tunnels in the area. One is 360 feet long, the other is 1,170 feet long.