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 Coal Resource Assessment of the Northern Rocky Mountain and Great Plains Fort Union Coal Resources Area, and can be viewed in relation to other relevant themes in this area.本批ArcView形状文件（ArcView shapefile）包含汉纳77、78、79及81号煤炭钻孔点位的矢量化表达。本批形状文件专为落基山脉北部与大平原区联合堡（Fort Union）煤炭资源区域的国家煤炭资源评估项目编制，可与该区域内其他相关专题图层进行关联查看。