Kevin Carmody, environment reporter, won a 1999 George Polk Award, one of the nation's most prestigious prizes in journalism, for his stories on the official cover-up of the illness and death of employees exposed to toxic metals decades ago in A-bomb factories. His series "Deadly Silence" revealed how hundreds of scientists, tradesmen and secretaries at a Manhattan Project lab at the University of Chicago were carelessly exposed to the toxic metal beryllium, then for 45 years intentionally kept in the dark about the potentially deadly health consequences.