_secaet Ral o. emer se { eeunenEne be faced with the possibility of having to be ready a week earlier than they intended, or of losing their efforts, On the other hand, I do feel that I should again warn you that this does not mean that a lot of these shots may not be later, If you are planning to work on a shot, here, ami another shot over here, you certainly should not plan along the lines of saying we will buy equipment and have people to do this shot and when we get through with it we will move the equipment over to do this shot; because you will certainly have the pessibility of having the order reversed or at least having the shot not go off any sooner, and not having enough time to move equipment. In some cases, this may not be possible and, where it isn't, we will have to live with it. I think, since a large pertion of the rest of the meeting will be presentations of individual projects, it might be worth while taking just a few maments to try to give you a picture of some of the experimental effort as it applies all across both atolls. There are many things fairly common to all shots and it is fairly ebvious that on any shot one must. measure the yleld of the device, The yield in general will be measured by radiochemistry and fireball - radiochemistry, by means of taking sauples with airplanes and then bringing the samples back to the United States for analysis; and fireball - by means of cameras in various positions on both atolls where those cameras are arranged to cover several shots, There is mot a separate camera setup for each shot. DELBIED DELETED pe €He on Runit,sanewhere aroundAqnoyi, up on Bogon close to Helen; on Eninman ard Aenoen | and Namu in Bikini Atoll, These are fairly large stations. A mmber of devices are two-stage devices on which one must measure the time interval so that various groups at both UCRL and LASL will be involved in measuring the time interval between the primary and secondary. The experimentation to do so varies fran shot to shot. | ——_—— PELETED . | DELETED DELETED . * Hence, the conditions forfiring have been arranged to get the “goatfallout data that one can fran such a shot, and it was particularly designed to have the height of burst slightly higher than the fireball radius, Fallout measurements will be made for this shot with ships surveying the water, with rafts, etc., and also on a few other shots to serve for canparison purposes. There is a large blast progran on that shot also, and on several others with structures being built along the reef on the north side to investigate the effects on those structures fran an air drop. In order to do a schedule like this, there are many places we are going to have alot of trouble, We have to fire the shot, which means, in the first place, that we have to get the banbs out there. A great proportion of the bombs go to Parry [ pe ME ete Ld an 7 caw te ecb Ad ae BePea PNT La