IPUWSE Support, | . fe , “45 February 1957 Secret RD letter, UCRL, file COPAA=311, subject: Hodification of g, dated 11 February 1957, This lotter concerning nuclear Cloud rad ochemical samling technique by utilising rockets, from Dr. Johnson to RAD Hanion through Dr. Felt, set forth the requiresent for a fast sip to be used in support of the project. hip to be employed in the post~-shot — location md retrieving of the nose cones from the sampling rociets, 2. %In evaluating ani determining the major ailitary suspartitens required for Operation HARDTACK, this Task Croup’s recomendations are based on the following assumptions: Operationally, HARDTACK will be similar to REDNING but it is expestad that the seope, both in mrbers of weapons and devices to be Mred’ axi tho range of ylelds, will be greater. b. The capability of conducting Joperatdons from afloat at BIXINI mst be maintained. ce. The dual capability of simiteaneous Mrings at both atolls is d, The evacuation of Task Croup 7.1 persone “trom the ENIWETCK Atoll e, Offeatell sites and participation may be equal to or greater than an planed, on an emergency basis must be provided for. | REDWING, . 2. For planning purposes, Task Grow 7.1 participation and numbers of persomel at both atolls vill be approximately the same as on REDWJING, : 3. ‘The following is a discussion which ineludes the proposed utilization and justification for certain major items of military support which are required by Task Group 7.1: a, f A requiremnt exists for a ship which will serve as Task Group 7,1 Comaarl Ship while conducting operations afloat at BIKINI, Adequate space such as shops or large staterooms mst be available which can be converted to serve as offices for approximately twelve staff sections and task mits. It should have quartering cavability for an estimted 70 cabin class TG 7.1 personnel and alesser mumboer of troop cless accomodations. Suitsble space, both as to sise and location, mst be available to install the timing and firing equipment required aboard, Power requirements for the Control Station for Operation REDWING were 10 KW, 115 volts AC single phase, So that EG&G ewld guarantee the equipments® operation, this power cam direotly from the ship'fa gonerating plant arsi wap indenondent of the ships distribution system. Aire comitioning was required, and will be again, whereby the temperature of the Control Room was reduced to 80° F ard 60 pereent relative humidity, Also the ship mst serve as the TG 7.5 Communication Center and Coding Center afloat. 2404 . COPIED/DUE z © : igengniientreneenreseeee” peeBOeRENEIINNETOS. LANL ROY, .2 | aipinletteels eur _a