Aes Lakas 411781 — bi! ge? em aia:HEADQUARTERS, JOINT TASK FORCE SEVEN A )S ' o SAALELS§S3EEC Washington 25, D. C. 5 January 1954 ense Flan’ < Def CJTF SEVEN No. 1-54 \~ Chart References: a. U.S. Navy Hydrographic Chart No. 5203, North Pacific Ocean, Marshall Islands. b. U.S. Navy Hydrographic Chart No. 6032, North Pacific Ocean, Marshall Islands - Northern Part Bikini Atoll. c. U.S. Navy Hydrographic Chart No. 6033, North Pacific Ocean, Marshall Islands, Eniwetok Atoll. Task Organization zg a B CLASSIFIED INFO BRACKETED me 3 2 OTHER (SPECIFY: £ a 1. Task Group 7.1 (Scientific) Dr. William BE. Ogle, LASL b. Task Group 7.2 (Army) Colonel Edward H. Lahti, USA c. Task Group 7.3 (Navy) Rear Admiral Henry C. Bruton, USN d. Task Group 7.4 (Air Force) Brig. Gen. Howell M. Estes, USAF e. Task Group 7.5 (AEC Base Facilities) Mr. James E. Reeves, AEC General a. The purpose of this plan is to establish responsibilities and to set forth instructions to all units of the task force as to conditions which may arise as a result of natural disasters, particularly ty- t phoons and tidal waves. 3 The intention is to provide for the preserva- tion of life and property during the actual course of the disturbance and the early restoration of essential services after it has passed. 3 cS LS DEPARTMENT OF ENERGY DECLASSIFIC/TION PEVIEW 1ST REVIEW-DATE: ~FAST _TORTERMINATION [CIRCLE NUMBER(S) 1. CLASSIFICATION RETAIMED S a. b. <A typhoon is a violent cyclonic storm of tropical origin with a wind force of sixty-four (64) knots or more. The area of destructive winds within a typhoon is extremely variable, occasionally as small as a circle of fifty (50) miles in diameter and, in other cases as large as a circle of 900 miles in diameter. Most of the destructive force of the typhoon on land areas results in the blowing over of buildings and power lines and the accompanying damage to exposed personnel, material and equipment by the extremely heavy precipitation and flying debris which invariably accompanies a typhoon. At sea, the major threat of damage is associated with the destructive force of enormous waves which break at random and in a confused pattern. The destructive force of a fully developed typhoon cannot be overemphasized and the surest invitation to disaster is to underestimate its capabilities. The newer "Pacific" structures in the forward area have been designed to withstand winds of 105 miles per hour. The so-called "mlti-story building" on ENGEBI ISLAND is well constructed and capable of withstanding typhoon forces. All wooden structures on the atolls are con- sidered unsafe for protection of life and property unless they are strongly braced and heavily sandbagged. Quonset type warehouses are potential sources of danger in the event of a typhoon since securing them is a project of such magnitude that it cannot be done within the resources and time available after receipt of a typhoon warning. following conditions of typhoon readiness are established for the ENIWETOK-BIKINI area: -l- a——<_ 225 2/ The

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