(10:32) b/w, silent
Forest fires ravage wooded slopes in Southern California. Water (melting snow and rain) rushes down the slopes, unchecked by plant life, washing away top soil and flooding fields in the valleys. CCC units sow mustard seed in the denuded areas by hand and by airplane. The mustard plants grow quickly, thus furnishing adequate vegetation to check erosion until the native plants can reestablish themselves.