By REX W. HUPPKE Associated Press Writer May 21, 2002, 5:09 PM EDT KOKOMO, Ind. -- It started as a low hum, barely noticeable. But within months, the endless throbbing was like a corkscrew twisting into Diane Anton's temple. The walls of her home vibrated. Her bed shook. Bouts of nausea, short-term memory loss and hand tremors followed. "The noise was so penetrating and invasive," she said. "It was just not getting better." So Anton quit her job, abandoned her $180,000 house and fled. She was the first person driven out of the city by what's come to be known...