VOL. BOOK 4 CHAPTER I SECTION 4 could definitely prove previous schooling and experience were selected. These men were given a thorough physical examination by the Jobsite doctor prior to being qualified as divers and were re-examined quarterly. The diving opera- tions undertaken during this operation were in connection with repair of the underwater POL lines, submarine cables and post-shot recovery of scientific instruments. Considerable difficulty was experienced in maintaining the POL submarine lines, both at Fred and Elmer. The flexible hose at Fred had to be disconnected from the steel hose and brought to the surface for inspection and testing after which 240 feet was renewed. At Elmer, four 30-foot sections were renewed. In order to reduce the possibility of damage to these hoses during fueling operations,Holmes & Narver initiated the procedure that, whenever fueling was to be undertaken, the hose would be picked up by Jobsite personnel and passed to the tanker, and on completion the Jobsite personnel would receive the hose from the tanker and lay it out on the bottom. In this connection divers reported that the bottom of the lagoon, both at Elmer and Fred over which the fuel hose must pass, was considerably cluttered with scrap left from militaryaction during World War Il. If fueling operations continue to be performed from tankers at buoys, the obstructions on the floor of the lagoon will constitute a continuing hazard to the fuel lines. The following table indicates deep sea diving activities for this operation. DATE March 27 REASON DEPTH OF DIVE (Feet) TIME SUBMERGED (Minutes) Recovery of POL line - Fred 105 41 1 Recovery of POL line - Fred 115 110 3 Repair POL line - Fred 110 - 120 46 ll Test diving Compressor 110 - 120 30 15 Repair POL line - Fred 110. 120 64 16 Repair POL line - Fred 110 - 120 59 April off Elmer (Two dives) (Two dives) (Four dives) 30 74 44 36 38 4-9