"PROGRAM 11 means Project 11.1 - Radiochemical Analysis - Jere Knight - LASL 11.2 - Sampling I eu going to discuss both parts of Program 11, the first part for Rod Spence and the second in place of Hal Plank. Frogram 11 in general designates the work of LASL Group J-l1, which is concerned with the collection and the radiochemical analysis of samples of bomb debris, mainly from the cloud. Project 11.1 - Radiochemical analysis for REDWING - These radiochemical analyses are to be done back here at Los Alamos; we will not maintain a lab on Parry. As in previous operations this will cover measurements of fission products of unburned fuels, where possible, and a fairly wide assortment of other elements, which were either inside or near the bomb and might have been activated by radiation from the bomb. From these we get yield and certain other performance parameters of the bomb where there is complex design, and we get a little information on the neutrons that escape from the bomb and into the environment, say those that are caught in salt water, or something like that. The statement on the yield and the efficiency should be modified a little bit; we get this exactly only for fission devices. For those which have thermonuclear components, we can get the fission part, and on the other part we can only get indirect information that requires a good deal of interpretations. Now, as to the experimental procedure, I'll just take the operations in sequence, and the beginning of the 11.1 sequence, you might say, goes with the removal of the sample papers from the wing tank filter units by trained AF teams. These are loaded into lead pigs and then aboard fast AF transports which are standing by - two of them. These transports usually take off at about H+6 hours. They do this as quickly as possible so that the samples are then transferred to Carco at Albuquerque and we get them up here at Los Alamos between 30 and 35 hours after the detonation. After we get the papers, it takes an additional seven or eight hours to dissolve them and process them so that the final solutions from which the chemists can start their analyses on are ready at about H+40 hours. It usually turns out that around H+41 hours, we start getting calls as to whether we have any results. I might say that the samples are divided, placing all the left wing tank papers in one plane and all the right hand in another so that if for any reason 4 plane is lost, or very badly delayed, we get a pretty representative batch of what the sampling Planes brought down. We wouldn't want to lose some critical ones. Now, we usually have or try to have one monitor on each plane from Group J-ll. This time, with the schedule as tight as it is, we think we'll probably have only one monitor per shot. His job is something as follows: First, to bring back all the information he's been able to pick up, say on Parry Island at Pogo headquarters, and it's pretty essential to get this as there are a lot of changes that take place which you don't COPIED/DOE =e sound .