SURVEY SAMPLE LAT LON COLOUR NATQUA NATSUR SORDAT SORIND DESCRP PRMSEC REMRKS BEGIN_OBSTIM ORIG_DATUM DEVICE SOURCE H06874 22407 52.928514 173.468115 Gravel 1-Jan-45 mggal AFSC H06874 22408 52.923945 173.476824 Gravel 1-Jan-45 mggal AFSC H06874 22409 52.935795 173.494313 Green Clay 1-Jan-45 mggal AFSC