C. 8 srsobdddbaadbs688080 ae t , sd bbSbSS In the preparation of this report, cognizance has been taken of the reports of the Commander, Joint Task Force SEVEN to the Joint Chiefs of Staff pertaining to Operation CASTLE. Although the JTF reports are comprehensive in scope, it is believed that their composition is, in general, directed toward military and scientific channels of thought. In addition, the JTF reports are thought to lack pertinent information on certain AEC activities and costs useful in evalu- ating various aspects of an operation and in planning for future operations. Therefore, in order to derive maximum benefit from experience gained during an operation, it has been concluded that a supplemental report, embodying only that amount of technical detail essential to an understanding of results and with certain data presented in a manner conducive to useful analyses of proving ground development, would prove decidedly beneficial. 0 bdobL4d oe ‘eave ere Sb Maman This report attempts to achieve these aims in a manner as brief and concise as clarity will permit. t¢ C Cf a eyes PESeed Oo ryrnd, 91 FOREWORD Copled/DOE LANL, J-Div.