the decoupling factor ig greater than 10. these ylelds will increased to a maximum of 5 tons, bs The Berkner Panel report also recommended underground nucle ar tests in various media to complete the investigation of detection The AEC has chosen a location within the Nevada Test Site where a deep nole is being dug in granite rock in preparation for its firing be approved. « emplacement of one of the recommended nuclear detection shots, should * Serre rE ane ‘ factors. The Commission is also searching for a suit- able location in which to fire a recommended underground nuclear shot ; in a large cavern to measure resulting decoupling factors in the event a decision is made to fire such a shot. Tobe Each series of nuclear tests, whether at the EPG or the NTS has required a build-up of construction, support and scientific personnel and equipment. At the end of each series it has been necessary to return most of the personnel to their normal assignments and preserve, or otherwise dispose of, the assembled equipment. This cut-back has been somewhat more thorough at EPG since Operation HARDTACK. Facilities there have now been placed ona maintenance stand-by basis. Such equipment as can be used elsewhere has been reassigned while other equipment has been mothbalied to protect it from the corrosive atmosphere. All activity is being concentrated on Eniwetok and Japtan Islands. By maintaining the Proving Ground under contract, it has been possible to relieve most of the military personnel from duty there during this maintenance period. >» 26 who do > Some 400 contractor employees will be required to keep the ( a a

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