The Masontown Mine is a former coal mine located in Masontown, Pennsylvania. It was part of the larger Connellsville Coal Basin, known for its rich deposits of bituminous coal. The mine operated primarily during the late 19th and early 20th centuries, contributing significantly to the local economy and the coal industry in the region. After its closure, the Masontown Mine became a site of environmental concern due to issues related to abandoned mine drainage. Efforts have been made to address these environmental impacts, including restoration projects aimed at improving water quality in nearby streams and promoting ecological recovery in the area.