Show to halt shifting sands oil Is being to sand from being drifted by the wind across the tracks of the 0 oregon egon washington railroad nall road and navigation nav gation company and impeding or eveh even preventing traffic dunes near the tracks racks in the columbia river valley tire are sprayed with crude cruda petroleum which h has been heated so as aa to s secure aie required fluidity A thin layer of material then forms on the land and so BO prevents tile the drifting ozithe othe surface one application serves far tor at least a year and in some locations location 9 for as many is as two or three I 1 |