Three of fifteen packages of neoprene 'O' rings recovered by drag lines from the Lamont Laboratories oceanographic research ship Conrad in the area of prime interest in the search for the nuclear submarine Thresher. The recovery was made on the 28th of May, and the package was forwarded to the Court of Inquiry, Portsmouth, N.H., for examination. After examination and tracing of stock numbers it was definitely determined that one of the fifteen packages could have come only from the Tresher. The 'O' rings are shown on the packaging material after opening. The original view, from whose caption the quoted text is taken, was released on 1 June 1963. Official U.S. Navy Photograph, from the collections of the Naval History and Heritage Command.