For decades, the small, quiet town of Hamlet, North Carolina, thrived thanks to the railroad. But by the 1970s, it had become a postindustrial backwater, a magnet for businesses in search of cheap labor and almost no oversight. Imperial Food Products was one of those businesses. The company set up shop in Hamlet in the 1980s. Workers who complained about low pay and hazardous working conditions at the plant were silenced or fired. But jobs were scarce...