You searched for: Author Geological Survey (U.S.) Minerals Information Team Remove constraint Author: Geological Survey (U.S.) Minerals Information Team Subject Economy Remove constraint Subject: Economy Subject Sand and gravel mines and mining Remove constraint Subject: Sand and gravel mines and mining Place Alabama Remove constraint Place: Alabama Place Colorado Remove constraint Place: Colorado 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.