Extensive planning at Boulder indicated the desirability of dividing the work load at the Forward Area into two phases. r.—_The nhasedevoted first principally tothe receiving of equipment and ndsupplies{_none “= Rollip“of allTU-3equipment. andsupplies was“Completed on on ‘Apr. 16, “1954, and was turned over to J-4 Section for return shipment to the ZI. 4.4 TASK UNIT 4, LASL ASSEMBLY TU-4, the LASL-directed assembly group, consisted of members of the Laboratory and personnel directly involved in fabrication assembly. With the exception co) athe American Car and Foundry Co. (ACF) personnel had actually. made the direct fabrication assemblies of the devices with which LASL was concerned, itself was designed and fabricated at LASL.._ bce ne ee neeeee ~ aati ~~“ . 7 f I at “AIthe units, with the exception of Zombie and Runt Il, were shipped to Eniwetok by surface vessel the first week in January 1954. TU-4 operations actively got under way during the first week in January, when the first group of people arrived in the Forward Area. Some slight revisions of facilities were required, as well as some modifications to the device installations. Trial runs with dummy units were ~ initiated as soon as practicable, involving theactual movementof the!_.- ,jdummy to shot location at Bikini; movement of the \qummy, on its barge, to final Bikini anchorage; and trial loadings of dummies onto each barge. wane vee CI ete en wee me geen ae ene ee Since_original plans called for detonation of four devices! wee. aeeee on barges and one ‘on land, all ona fairly‘tigght time scale, ‘the“majority "~. -- wee 8 ye wa & of TU-4personnel were assigned|‘to work on specific devices. The over-all TU-4 responsibili- ty for each device was given to the LASL project leader who had followed the design and fabrication of the device, With the arrival of the devices the detailed operation plans and manuals beganto fulfill their real purpose in the direction of the multiphased operations. Close coordination with TU3, priorto and after arriv alat Eniwetok, was accomplished; ‘ _ {Over--all plans were coordinatedthroughtthe ‘Staffof”TG 7.1. lL 62