 HISTORY
  H-10598/95--OPR-J343-MI;  SIDE SCAN SONAR AND DIVER INVESTIGATION REVEALED TWO CONCRETE BLOCKS, SIDE BY SIDE, 4 FT X 5 FT , 3 FT HIGH. LEAST DEPTH WAS 24 FT.
 H12018-- OPR-J417-NRT1-11; Contact detected in 200% SSS coverage and investigated