You searched for: Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Subject Aggregates (Building materials) Remove constraint Subject: Aggregates (Building materials) Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Place Arkansas Remove constraint Place: Arkansas Place Delaware Remove constraint Place: Delaware Place Arizona Remove constraint Place: Arizona Place Connecticut Remove constraint Place: Connecticut Format Shapefile Remove constraint Format: Shapefile
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.
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.