SURVEY SAMPLE LAT LON COLOUR NATQUA NATSUR SORDAT SORIND DESCRP PRMSEC REMRKS BEGIN_OBSTIM ORIG_DATUM DEVICE SOURCE H06879 22417 51.779119 -177.794055 Rocky 1-Jan-43 mggal AFSC H06879 22418 51.771768 -177.791793 Hard Sand 1-Jan-43 mggal AFSC H06879 22419 51.771838 -177.78231 Black Sand and Gravel 1-Jan-43 mggal AFSC