In 1977, a highway construction project in Maryland unearthed a cemetery dating back to pre-Civil War times. It contained the remains of more than 100 enslaved Black people who once worked at nearby Catoctin Iron Furnace. Who were they? And what happened to this vanished community? Join us as we pore over historical documents, examine bones, and use the latest scientific equipment to learn more about these forgotten workers and the uncredited role they played in helping to create and drive America's Industrial Revolution.