
 HISTORY
  UNKNOWN SOURCE--OBSTRUCTION REPORTED CHARTED IN LAT 42-57-26N, ì
LONG 78-57-39W.
  H10020/82--OPR-W216-HFP-78; OBSTRUCTION WAS SEARCHED FOR BUT ì
WITH NEGATIVE RESULTS; LEAST DEPTH IN AREA WAS 10.4 FT.; A PILE ì
CLUSTER, ORIGINATING WITH L