Coal mines in Sangamon County (maps) | SangamonLink
Mine Subsidence and Groundwater Anamolies in Old, Abandoned, Shallow Workings / Geoenvironment / Research Strengths / Geotechnical Science and Engineering / Institutes and centres / Research / The University of Newcastle, Australia
Interactive map of coal mines in West Virginia | American Geosciences Institute
Newcastle mine subsidence dustrict map
Interactive atlas of historical coal mine maps in Pennsylvania | American Geosciences Institute