
 HISTORY
  UNKNOWN SOURCE--PILES APPEARED ON CHART 11317 PRIOR TO 1980 ì
EDITION. POSITION SCALED FROM CHART 11317 (1:50,000). POSITION: ì
LAT. 28-34-15N, LONG. 96-31-20W. (ENT. 12/87 GM)
  H10381/91-- OPR-K228-AHP; SUBMERGED PIPE COVERED .9 METERS ì