 LNM40/93--8th CGD, 10/1/93; NOAA Ship Mt Mitchell reported a concrete pile 40 x 8, approximately 16 NM SW if Isle Dernies, sticking 4 ft off the bottom at approximately 28 54 11 N 90 49 03 W. (KSJ 4/2/2010)

 H12247/2011;NOS--Survey located 20 ft obst