nero Discussions Bearing on Proposal 1. Scope of Operation The full scope of Operation Hardteack represents an increase in effort over Operation Redwing of 75-1004. The figure of 25 to 30 shots total would offhand seem to indicate that Operation Hardtack will be 75-100% longer in the operational phase, From the UCRL point of view, this is not necessarily so as the schedules for firing at Bikini and Taongi will show. It is our > he two stage test devices e fired as a rather heavily diagnosed surface or short tower shot. This shot, plus two or three of the lower yield two-stage devices, and the five single stage devices will be comnitted to the Tere-Uncle Island complex for testing. Such a firing program can start with the beginning of the operational phase and be concluded as rapidly aS possible. At the same time, preparations and firing of large devices ean proceed on the northern side of the etoll. Also, concurrent with the Bikini phase.of the testing, and if the proposal is approved, firing of the large yield barge shots can proceed routinely at Teongi. V fede aba gg. Concept of Operation . bake ‘ a derds oa yield 300 ae to wap dapbe! 5 by DELEALM & expec boy t Reasons for this difference are pointed out in the following discussions: fi a) ale Ge os of time equal to, if not less than, that required for accomplishing Redwing, providing Taongi is employed. wii opinion that the entire Hardtack Operation can be concluded within a period The acceptance of the basic principle of dividing the programs of the two ‘The LASL 7 MI device yield should be tested at Bikini since it is somewhat 'larger, in yield than the mximm it seems reasonableto fire at Enivetok, There is tentative agreement between the laboratories that either group finishing their shot program in a given atoll would immediately make that area availsble to the agency with shots remiining to be fired. The UCRL planning incorporates the use of Taongi in order to relieve both Bikini and Eniwetok of yields which would be difficult to interweave with smaller shots and which would necessitate being mich more selective in choosing a safe shot day, especially at Eniwetok. Following are two schedules for WRL shots with and without the proposed Taongi firing capability. These schedules ere, of course, not firm at this time, but incorporate the basic thinking and ere therefore not just examples, but typical of the final Hardtack schedules. ‘IbOPIED/por LANL RPC These prospective schedules are the culmination of several planning conferences in our own organization at Livermore and reflect the UCRL point of view towerd accomplishing the operation in the shortest time practical for each of the two cases: “ RTE re. re re ~ wwe , tho affords dusl large shot capsbility and dual smll shot capability between the two atolls, but with a mximum of two shots on any one day. aig petion of Enivwetok and UCRL's occupation of Bikini (even without Teongi) th LASL‘s occu- be. its own firing with 6 minimm of interaction with otber shots. Pat lsboratories by locating their respective testing sites in separate atolls insures the maximm in flexibility insofar as mintenance of ready dates is concerned. Under this plan, each laboratory is free to change the order of