Wyodak-Anderson coal zone study limit in the Powder River Basin, Wyoming and Montana (wabndg.shp)

This ArcView shapefile contains a polygon representing
the study area for the Wyodak-Anderson coal zone in the
Powder River Basin, Wyoming and Montana. This theme
was created specifically for
the National Coal Resource Assessment in the Northern
Rocky Mountains and Great Plains Region

本ArcView 形状文件（ArcView shapefile）包含一个多边形，用于表征怀俄明州与蒙大拿州粉河盆地内怀俄达克-安德森煤层带的研究区域。该专题图层专为北落基山脉与大平原地区的国家煤炭资源评估项目编制。