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Subject
Minerals
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Subject
Aggregates (Building materials)
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Subject
Geoscientific Information
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Subject
Economy
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Institution
Stanford
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Place
Arizona
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Data type
Point
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Year
2002
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1. Sand and Gravel Operations in 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.