CHAPTER IV, SECTIONS 6 ano 7 the airfield at Peter with the schedule arranged to meet all incoming and outgoing planes. In June 1953 there were at the Jubsite a total of 112 heht vehicles under HAN control, which included 14 ton jecps.ts ton pickups, 3, ton weapon carriers and tly ton personnel carriers. Additions to this fleet were received as follows: wuly 1953 — — Aug. 1943 — Oct. 1953 — 5 1, ton jeeps 3 - 112 ton personnel carriers 6 - 113 ton personnel carriers 5 - 1!) ton personnel carriers Nov. 1953 — —Dee. 1953 — Mar. 1954 — & 5 3 7 - 139 ton personnel carners 14 ton jeeps - 119 ton personnel carriers |, ton Dodge Power Wagons With the arrival of the military and scientific personnel the total nurnber of vehicles at the Jobsite ‘vas greatly augmented by those of other agencies; these were pooled for most effective usage. Phe maintenance of all schicles, other than thuse at Fred, was performed hy contractor personnel, SECTION 7 COMMUNICATIONS The need for reliable com.nunicarion systems for the correlation of the entire onterprise as a harmonious whoie was manifested by iwo conditions not encountered in previous test operations; (1) the use of one Atoll as the main base for supply and field management with the major portion cf the work to be accomplished on another Atoll 185 miles away, and (2) the destruction of shore facilities on Bikim: Atoll as « result of the first test operation. With the operations on two + idely ¢-parated atolls, dependable interatoll communication was fundamental and requtsite | ecause Task Force personnel were quartered and naintained offices or various ships, and the required work was scattered throughout the various sites ot the atoil, the dissemination of information pertaining to this work. the division of this work into tasks, and the assignment of qualified personnel to the tasks for efficient accomplishment was a difficult problem. Dependable telety~e facilitics were installed at Tare by elemey‘s of the U.S. Army Signal Corps and were made available to the Contractor sho~ly after t'e first landing in October 3952. Although the delivery time from origi- ~ natu. to .'dressee was measured in hours, ou the whole this service was generally satista: tory. When immediate exchange of information between atolls was necessary, the radio phone facilities of the U.S. Army Signal Corps were made available to the Contractor. This service was limited in use for security reasons. It was, however, satisfactory un.il the tert. nal equipment at Bikini was vifted tzom ashore to afloat. Duc to radiv-interfereiuces that prevailed on board ship. the transmission and recertion of messages over this circuit as often erratic ana unreliable. When this occurred the radiophone network: of Te-k Group 7.1 (EGE&C), which retained its terminal equipment in Station 73 on site Nan, was used for emergency calls. At times the ships CW-(Code) radio facilities were made available for transriission of messages het-veen Atolis. Radio-phone facilities for communication within an atoll were widely used. At both atolls the Contractor operated and nuaintained marine and administrative networks. The ma<ine network provided the means for mair:e disnetcher-to-craft cammunicscion and the ad: in. istrative network between offices and forces in the tield. For the terminals for forces jin the field, the equipment was installed in’ vemeles. During tho construction phase at Pikini s.toll prior to the installation of the telephone v7 roms, these radio-phone networks were absosutely essential for the proper perfurmancve of the work required. Walkie-Talkie s ts were pro- vided for such operations cs surveys, umoacing pulk fue} from tankers communications between bater plants and concrete pours, and, it gencral, on sites where other types of ra,id communications were not available. The U.S. Navy intership radio-phone cicuits were at uimes used to tramsinit mecsages for the Contractor as nceded between ships which were net within the Contractor's retworks. Figure 4-34 shows a radio-phone installation in en LCM hoat. t Page 4-A4¢