USGS Minerals Information: Map Data
Coal Facility Coal Mine: Construction Minerals Operations, Excluding Crushed Stone, Sand and Gravel, and Common Clay (PDF) Ball Clay Cement Dimension Stone Gypsum Mica Perlite Pumice: MetalsOre Processing Plants and Smelters or Refineries (PDF) Aluminum Beryllium Bismuth Cadmium Chromium Cobalt Columbium and (or) Tantalum Copper Gold Iron Ore ...