Part of it are the ruins of PUREX, a Plutonium Uranium Extraction Facility that has been used to produce Plutonium for nuclear weapons from World War II on throughout the Cold War. Extracting Plutonium from used Uranium fuel is a chemical process hat leaves aggressive and highly radioactive waste.

On Tuesday an incident occurred at the the site. A sinkhole appeared above an old railroad tunnel which is full of radioactive equipment. Workers are now filling the hole with 50 truckloads of dirt. Officials claim that no release of chemicals or radioactivity occurred.

The old railroad tunnel at the side has been used to store radioactive machinery and fuel containers:

Railroad cars loaded with contaminated equipment were backed into the tunnel by a remotely operated engine and left there, with the door eventually sealed closed.