As is often the case with tales of great discovery, the details of how buried treasure came to be found beneath the rolling countryside of Pittsylvania County, Virginia, have grown a little gauzy over the last 30 years. But here is the story as the prospectors tell it. One day, in March 1979, a man named Byrd Berman, a geologist by training, was driving down a road through cattle pastures when the scintillometer sitting on the dashboard of his Hertz rental car began to beep.

James Fallows writes: