Overburden in the Rosebud-Robinson coal zone, Powder River Basin, Montana (rsovbg.shp)

This ArcView shapefile contains a polygon representation of the overburden to the base of the Rosebud-Robinson coal zone, Colstrip coalfield (Powder River Basin), Montana. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region.本 ArcView 形状文件（ArcView shapefile）包含了蒙大拿州粉河盆地（Powder River Basin）科尔斯普林煤田内，罗斯巴德-罗宾逊煤层带基底之上覆盖层的多边形矢量表征。本专题图层专为北落基山脉与大平原地区的全国煤炭资源评估项目编制。