DMO Mine Portals and Seam Elevations (Historic)
收藏Pennsylvania Spatial Data Access (PASDA)2026-07-03 更新2026-05-26 收录
下载链接：
https://pa-geo-data-pennmap.hub.arcgis.com/maps/803c2fe1596148b29aee3ccf90846c58
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资源简介：
Legacy point data of coal mine portal entries and coal seam elevations digitized from the historic Mylar tracking system, attributed with fields from BMP spreadsheet of Mylar index cards.
创建时间：
2025-10-07
