CHAPTER IV, SECTIONS 6 and 7 the airfield at Peter with the schedule arranged to meet all incoming and outgoing planes. In June 1953 there were at the Jobsite a total of 112 light vehicles under H&N control, which included 44 ton jeeps, ton pickups, 3% ton weapon carriers and 144 ton personnel carriers. Additions to this fleet were received as follows: July 1953 — — Aug. 1953 — Oct. 1953 — 5- % ton jeeps 3 - 1% ton personnelcarriers 6 - 11% ton personnel carriers 5 - 14% ton personnel carriers Nov. 1953 — — Dec. 1953 — Mar. 1954 — 8 - 1% ton personnel carriers 5- & ton jeeps 3 - 1% ton personnel carriers 7 - 144 ton Dodge Power Wagons With the arrival of the military and scientific personnel the total number of vehicles at the Jobsite was greatly augmented by those of other agencies; these were pooled for most effective usage. The maintenance of all vehicles, other than those at Fred, was performed by contractor personnel. SECTION 7 COMMUNICATIONS The need for reliable communication systems for the correlation of the entire enterprise as a harmonious whole was manifested by two 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 of the work to be accomplished on another Atoll 185 miles away, and (2) the destruction of shore facilities on Bikini Atoll as a result of the first test operation. With the operations on two widely separated atolls, dependable interatoll communica- tion was fundamental and requisite because Task Force personnel were quartered and maintained offices on various ships, and the required work was scattered throughout the various sites of the atoll, 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 teletype facilities were installed at Tare by elements of the U.S. Army Signal Corps and were made available to the Contrac- tor shortly after the first landing in October 1952. Although the delivery time from origi- Due to radio-interferences that prevailed on board ship, the transmission and reception of messages over this circuit was often erratic and unreliable. When this occurred, the radiophone network of Task Group 7.1 (EG&G), which retained its terminal equipment in Station 70 on site Nan, was used for emergency calls. At times the ships CW-(Code) radio facilities were made available for transmission of messages between Atolls. Radio-phone facilities for communication within an atoll were widely used. At both atolls the Contractor operated and maintained marine and administrative networks. The ma- rine network provided the means for marinedispatcher-to-craft communication and the admin- istrative network between offices and forces in the field. For the terminals for forces in the field, the equipment was installed in vehicles. During the construction phase at Bikini Atoll prior to the installation of the telephone systems, these radio-phone networks were absoiutely essential for the proper performance of the work required. Walkie-Talkie sets were pro- nator to addressee was measured in hours, on vided for such operations as surveys, unloading pulk fuel from tankers, communications between batch plants and concrete pours, and, in tory. When immediate exchange of information communications were not available. The U.S. the whole this service was generally satisfac- 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 until the terminal equip- ment at Bikini was shifted from ashore to afloat. general, on sites where other types of rapid Navy intership radio-phone circuits were at times used to transmit messages for the Contractor as needed between ships which were not within the Contractor’s networks. Figure 4-35 shows a radio-phone installation in an LCM oat. Page 4-49