PA Department of Conservation & Natural ResourcesAreas in Pennsylvania that are underlain by Pennsylvanian-age rocks that possibly contain semi-anthracite coal. Data scale 1:250,000.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/870b7836360e4a419467533c5167c459_7engPennsylvania Department of Conservation and Natural Resources Open Data PortalPublicCoal Fields in Pennsylvania – Semi-Anthracite [Pennsylvania]Web servicesPennsylvaniaLast Modified: 2026-01-08