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Prospect- and Mine-Related Features from U.S. Geological Survey 7.5- and 15-M...
Version 7.0 of these data are part of a larger U.S. Geological Survey (USGS) project to develop an updated geospatial database of mines, mineral deposits, and mineral regions in... -
Prospect- and Mine-Related Features from U.S. Geological Survey 7.5- and 15-M...
Version 7.0 of these data are part of a larger U.S. Geological Survey (USGS) project to develop an updated geospatial database of mines, mineral deposits, and mineral regions in...
