USGS Minerals Information: Map Data USGS minerals information and maps metal processing plant http://minerals.usgs.gov/minerals/pubs/mapdata/#datadocs Publisher Index Page (html) USGS Mineral Production Map USGS Minerals Information Map Data maps http://minerals.usgs.gov/minerals/pubs/mapdata/#datadocs USGS Mine and Mineral Processing Plant Locations mining and mineral resources? USGS Minerals Information: Map Data