Kodak Confirms It Had Weapons-Grade Uranium in Underground Lab

Kodak turned the material over to the government in 2007, under heavy security. But for more than 30 years, the company had a device called a californium neutron flux multiplier, or CFX, in a specially built labyrinth beneath Building 82 at its labs near Rochester, New York. The device was about the size of a refrigerator.

It was not a reactor, but rather a hunk of metal emitting radiation. Its purpose was to create a beam of neutrons to use for scanning and testing other materials. The device's primary source of neutron radiation was the radioactive element californium