FOREWORD FOREWORD The following report of Operation HARDTACK, Phase I, covers all aspects of engineering, construction, operation, and maintenance of the Eniwetok Proving Ground, Marshall Islands. This report has been prepared in accordance with the requirements of Contract No. AT(29-2)-20 as set forth in Paragraph 1, Page 10, Modification 55, of General Requirements. The series of nuclear tests comprising Operation HARDTACK, Phase I, has advanced the development of weapons for defense against airborne and missile attack by a potential enemy. Another goal of the tests was the further development of nuclear weapons with reduced radioactive fallout. The principal objectives of this report are to provide a complete and detailed account of the stewardship of Holmes and Narver, Inc., as Archi- tect-Engineer-Construction-Management Contractor for the Eniwetok Prov- ing Ground; to make a careful evaluation of the work performance; and to present conclusions and recommendations which will be of value to the Atomic Energy Commission, to Holmes and Narver, Inc., or to other participants in future projects of a similar nature. Page 5