You searched for: Subject Mines and mineral resources Remove constraint Subject: Mines and mineral resources Subject Economy Remove constraint Subject: Economy Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Place Colorado Remove constraint Place: Colorado Place Alaska Remove constraint Place: Alaska Data type Point Remove constraint Data type: Point Format Shapefile Remove constraint Format: Shapefile Year 2002 Remove constraint Year: 2002
2002. Geological Survey (U.S.) Minerals Information Team. This point shapefile includes sand and gravel operations in the United States. These data were obtained from information reported voluntarily to th... National Atlas of the United States.