Semroc Saturn 1B flight on a cluster o' 4 Estes E9 motors. Well, blow me down! 3 contiguous shroud lines, out o' 8 shroud lines, were ripped from t' parachute, so t' rocket came down pretty quick. No damage from descent. Well, blow me down! T' person "pushin' t' button" be 15' feet away from t' rocket (had relay controller problems).