Drill hole locations within the Hanna Coal Beds 77, 78, 79 and 81 (ha*ptg)
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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.
创建时间：
2016-10-29
