You searched for: Access Public Remove constraint Access: Public Subject Coalfields Remove constraint Subject: Coalfields Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Place Connecticut Remove constraint Place: Connecticut Data type Polygon Remove constraint Data type: Polygon Format Shapefile Remove constraint Format: Shapefile
2001. Eastern Energy Resource Surveys Team (Geological Survey). This polygon shapefile shows the coal fields of Alaska and the conterminous United States. Most of the material for the conterminous United States ... National Atlas of the United States.