a ae, aa we 7 a) ae at a z Pe . OT 2 1 ‘ oo . (4) Progran $. This progrem erigiually ponsisted of three individual projects; one designed to deterzins the icad on sm idealised cubical structure; awe to chtain the di~ mensions ef the craters forned by several cf the shots; and the third to determine the effects ef blast on a natural tree stand, Late in daruary, Project 5.4, a Heavy project, was set up to determine the effects of high yield explosions on a planted sea mine field. After the first shot, Project 3.5 was initiated by Task Uuit 13 te doowssnt the unexpected damage which occurred te various etructures 48 a result ef the shot, Fo significant operational prebians resalted from the conduct of theese projects. The crater was performed by means of a specially equipped emali iand> ing eraft (100) utilising a conventional ship's fathomster, Posi« Gioning efthe ICU was accomplished by means of Raydist equipment which had been borrowed by the project group for this operation, This equipment did cause considerable difficulty, however, the aiftiaulty: sould be traced dirsetiy to the fact thet the equipment was borrowedshad been extensively medified, and was being operated by parzonnel who were net thoroughly familiar with it, Tertunntely, the Rayéist tasbmioians who were in the forward area to operate siniler equipment for positioning the effects aireraft wore able — $e assistin setting up the equipment, checking it out and elininate ing sone of the operations! difficuities, It is interesting to note ‘that with the addition of the mine field project, three support ships, « destroyer mine (DM), 2 saivage and rescue tug (ARS) end & landing ghiptank (LST) wero immediately nade available by the Navy, This would sean to indicate that head the Task Foros re« quested adequate Naval support during the planning phases of the operation, sufficient suppert could have been made available fer 1 projects. (e) Program 4, Program 4 was estab lished after ¢he first shet in order to document such information as could te obtained as a result of the unexpected exposure of a sarge member of Marshaliese natives, The program operated at wnjaiein from shortly after Shot } until approximately 2 Kay, A group of medical personnel under the direoticn of CDR Cronkite of the Havel Medion) Resvercsh institute moved from the 27 to ¥wajalein where the cvacuses had been taken for medical care and treatment, The only cperational difficulties experienced in eon- nection with thia rrogrem wore those which are usually experienced. when & teat projest ta set up and put inte an operation ca oxtresely ‘ 7 i“ —— |