hi Estimate - Phase V-A. The following estimate for Phase V-A includes cost for replacement of the maximum amount of facilities that may be damaged during the experiments on four shot islands. The deduction shown following the estimate for Phase V-A has been estimated on the basis that the degree of damage to certain of the facilities will not require this maximum replacement. The actual cost will undoubtedly be between these two figures. It is assumed that activity in the center (3 inch) paved area around the towers will be such that all of this pavement must be removed and that all paving around towers (both 3 inch and 1-1/2 inch) will be relaid. The deduc- tion shown following the estimate for Phase V-A omits all paving reconstruction. Also included in the maximm estimate is the cost of rebuilding com- pletely all building superstructures for the outlying camps. If it is pos- sible to salvage this material for re-erection, the material cost can be reduced considerably. Replacement for the water system includes new material and installation labor for all shot island water tanks, one-half of the pumps and all water system buildings. tion of pumps and stills only. The deduction contemplates the re-installaOn the maximum estimate, it is assumed that replacement of electrical work will include, on the shot islands, twenty percent replacement of underground buildings, loss of all above groum power plants and all overhead distribution lines. The deduction estimate is on the basis that only one-third of this loss will be sustained. Special buildings are included in the maximum estimate on the assumption that the second experiment might require several new buildings of types different from those originally constructed. ings required. The deduction assumes that there will be no such build- All other items are considered nominal, so no credit is reflected in the deduction. IX - 10