Drill hole locations within the Hanna Coal Beds 77, 78, 79 and 81 (ha*ptg)

These ArcView shapefiles contain representations of the Hanna 77, 78, 79 and 81 coal drill hole locations. These shapefiles were created specifically for the National...本批ArcView形状文件（ArcView Shapefile）涵盖了汉纳77号、78号、79号及81号煤炭钻孔的点位空间表征信息。此类shapefile专为国家[原文未完整表述]专项定制开发。