You searched for: Subject Economy Remove constraint Subject: Economy Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Institution Stanford Remove constraint Institution: Stanford Place Alabama Remove constraint Place: Alabama Place Colorado Remove constraint Place: Colorado Place Delaware Remove constraint Place: Delaware Place Alaska Remove constraint Place: Alaska Data type Point Remove constraint Data type: Point 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.