proving ground in this status for the AEC. Should a decision be made to resume testing at the Eniwetok Proving Ground, the time necessary to build up and commence testing would be largely dependent upon the extent of the tests to be conducted, t as in previous operations. At the Nevada Test Site, weapons test facilities are also being maintained in a stand-by status. However, underground tests require a long lead time for digging holes and tunnels in which shots would be fired. Therefore, some digging has continued in order that under- ground testing could be resumed there within a few months of a decision to do so. : '

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