Hahn, nicknamed the "Radioactive Boy Scout", is an Eagle Scout who had previously earned a merit badge in Atomic Energy and had spent years tinkering with basement chemistry which included small explosions. Furthering his experiments, Hahn diligently amassed radioactive material by collecting small amounts from (occasionally stolen) household products, such as americium from smoke detectors, thorium from camping lantern mantles, radium from clocks and tritium (as neutron moderator) from gunsights. His "reactor" was a large, cored-out block of lead, and he used lithium from $1000 worth of batteries to purify the thorium ash using a Bunsen burner.
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Although his home-made reactor never achieved criticality, it ended up emitting toxic levels of radioactivity, around 1000 times normal background radiation. Alarmed, Hahn began to dismantle his experiments, but a chance encounter with police led to the discovery of his activities, which triggered a Federal Radiological Emergency involving the FBI and the Nuclear Regulatory Commission. The Environmental Protection Agency, having designated Hahn's mother's property as a Superfund hazardous materials cleanup site, dismantled the shed and its contents and buried them as low-level radioactive waste in Utah. Hahn refused medical evaluation for radiation exposure.
http://en.wikipedia.org/wiki/David_HahnCracks me up even thinking about that guy. :rofl: