  H10560/94--OPR-K171-MI-94;  FOUND AN OBSTRUCTION IN 29/44/11.08N, 093/20/29.24W (NAD83) WITH A LEAST DEPTH OF 18.4 FEET MLLW.
  LNM20/96--8CGD (14 MAY 1996);  PLACED THIS OBSTRUCTION ON THE CHART AND LISTED THE SOURCE AS NOS BP157588 WHICH IS A Q-DWG