On December 19, 1907, a tremendous explosion shook the Youghiogheny River Valley at the Darr Mine in Van Meter, Westmoreland County, killing 239 men and boys. It remains the worst mining disaster in Pennsylvania history and led to important changes in the mining industry. Yet very few people know the story. With compelling interviews and rich archival images, the story focuses on a small, dedicated group of people - led by elderly Ann Toth of Bobtown, Pennsylvania - all determined to preserve the Darr's place in history. The documentary is from writer/producer David Solomon and videographer/editor Paul Ruggieri.