One of the things I found very interesting was this:
Charles Duelfer wrote: Not only were these scientists developing a rail gun, but their laboratory also contained documents describing diagnostic techniques that are important for nuclear weapons experiments, such as flash x-ray radiography, laser velocimetry, and high-speed photography. Other documents found outside the laboratory described a high-voltage switch that can be used to detonate a nuclear weapon, laser detonation, nuclear fusion, radiation measurement, and radiation safety.