
 HISTORY
  UNKNOWN SOURCE--APPLIED TO CHARTED 1971; VISIBLE OBSTR, SCALED ì
FROM CHART IN LAT 27-48-43.5N, LONG 97-11-22W. 
  CL119/75--USPS; CHART REVISED TO OBSTR REP. (ENT SRB 1/88)
  H10332/90-- OPR-K229-AHP; WELLHEAD WITH STEEL CAGE AND FLASHIN