You searched for: Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Subject Phosphate mines and mining Remove constraint Subject: Phosphate mines and mining Institution Stanford Remove constraint Institution: Stanford Place Massachusetts Remove constraint Place: Massachusetts Place Connecticut Remove constraint Place: Connecticut Data type Point Remove constraint Data type: Point
2003. Geological Survey (U.S.). This point shapefile represents locations of agricultural minerals operations in the United States. The data represent commodities covered by the M... National Atlas of the United States.