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Start Over You searched for: Year 2001 Remove constraint Year: 2001 Place United States Remove constraint Place: United States Subject Mines and mineral resources Remove constraint Subject: Mines and mineral resources

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2001. Geological Survey (U.S.) Minerals Information Team. This point shapefile represents locations of crushed stone operations in the United States. These data were obtained from information reported volu... National Atlas of the United States.
2001. United States. Minerals Management Service. This polygon shapefile shows the official protraction diagram (OPD) and leasing map boundaries for the United States, covering areas of the Outer C... Geological Survey (U.S.).