with particular reference to analysis of hazards alpha radiation and from possibly contaminated organisms." ..eThe following investigation: items were listed for from food specific A. The amount and nature of radioactivity remaining in the lagoon water and on the reef and land Structures of the atoll, wherever it exceeded normal levels of radioactivity and cosmic rays. Particular attention to be given to that portion of the reef between Amon and Bikini Islands; at a stage of tide as nearly as possible that which existed 15 minutes after Test B, to chart the exposed portion of the reef by use of aerial photography. B. The concentration and kind of radioactive materials in plants and animals of the area, and the effects of radioactivity upon such organisms. C. Phystological, geological, and oceanographic Studies of organisms and reef-building processes, including the drilling of cores down to 1,000 and perhaps 2,500 feet. D. Detailed observations (including photographic recording) of ships sunk as a result of Test B, with special attention to Saratoga, Nagato, Pilotfish, and Apogon, and perhaps Arkansas and Gilliam, time permitting. Detatled structural inspection of the sunken vessels, to determine the exact cause of sinking; and to reveal minor structural failures such as bent, warped, or ruptured plating and scantlings. E. Recovery of four instruments from Nagato, as follows: one ionization gage, two linear. time pressure recorders and one diaphragm type damage gage. These instruments, being watertight, were believed to good condition, and it was thought recordings might be of considerable value. that’ be in their F. Time permitting, to attempt to locate a section of LSM-60, believed to have been identified in photographs, and to inspect this section thoroughly for type of rupture, heat effects, and radioactivity. 9000084 C-3