The major problem and the one of highest priority was the reduction of radio- activity in the test areas to establish a level of safe daily tolerance for personnel. The secondary problem was clean-up, maintenance and repair. Both of these problems were unexpectedly complex and placed unanticipated requirements on personnel and logistic supvort. There were no existing pre- cedents for the engineering and construction problems involved in making this area radio-logically safe, and it is consequently not surprising that the job was not accurately predicted. The grading operation designed to reduce the hazard of radio activity, described on vage V-15 of the Reconnaissance Report, was approched sub- stantially, as described and was made effective with the modification that extensive filling has been judged to be unnecessary in view of most recent investigations. Experimentation with the radiological problem was carried on in several alternative discussions, and the most effective and economical solution was determined and approved by Radsafe representatives and officials of the Atomic Energy Commission during the field inspection trip during May 1949. Phase I mission can therefore be regarded as having been accomplished, although routine progress will continue into Phase II. BEGINNING OF PHASE II: there remains at the beginning of Phase II the following major items of effort, all of which are being carried forward on a high priority: Decontamination of Sandsone test areas. Parry Camp Construction. POL Facilities. Piers and air strips. Construction Plants. Repair and maintenance as required.