More than 50 individuals have reported cancer diagnoses after working in Poe Hall at NC State, where PCBs, known carcinogens, have been found. In short:More than 50 people have contacted WRAL News about their cancer diagnoses, which they believe are linked to working in Poe Hall at NC State. PCBs, chemicals known to cause cancer, have been detected in Poe Hall. The situation raises concerns about the long-term health impacts of exposure to toxic substances in buildings. The increasing number of cancer cases linked to a specific location points to a broader concern about the long-term effects of exposure to toxic substances in our environments.