
 HISTORY
  CL1227/72-- RADIO MESSAGE RU/HE TO AMC; OBSTRUCTION REPORTED AT ì
ABOVE POSITION, LD 48 FEET (PREDICTED).
  NM41/72-- REPEATS ABOVE INFO.
  CL1431/73-- RU/HE REPORT OBSTRUCTION TO BE A PIPE EXTENDING ì
APPROX. 4 FEET OFF THE BOTTOM; CLEAR