Decker overburden and exposed zone for the Anderson-Canyon coal zone, 1999 National Coal Resource Assessment

These ArcView shapefiles contain: 1) a representation of thickness of overburden above the Anderson-Canyon coal zone, and 2) a representation of exposed zone for the...此类ArcView形状文件（ArcView shapefile）包含以下两类数据：1）安德森-峡谷煤层带（Anderson-Canyon coal zone）上方上覆覆盖层厚度的空间表征数据；2）……的出露带空间表征数据。