100, 000 and 300,000 feet, perhaps with time we could establish something of the spread of actual metal Whether this is feasible or not I don't know. [am sure it would take a lot of rocket money to get these data. I feel that the meeting has been more than adequate for me from a technical viewpoint. Lama radiobiologist, and I have had difficulty understanding some of the geophysical terms that have been discussed, Many of us, particularly in the (Military) service, are forced into jobs in which we have to consider sciences and disciplines other than our specialties. It's been a real pleasure for me to be here. I hope we will have more meetings of this kind. Lt. McCourt: Our office is handling some of these pod tests for the AEC and has all the information on them. We have a pretty good schedule on the availability of pods, so if you come up with an experiment you think good, you could check with us. To re-emphasize the interest in this particular area of re-entry, we are planning now, along with the AEC on the SNAP re-entry program, to work out flight tests to determine the re-entry of this unit. Any method of sampling that might be useful in this type of work would certainly be of interest to us. Maj. Decker: The Space Nuclear Propulsion Office is a development office with the job of getting the nuclear rocket flying as soon as possible, We recognize that we have to worry about hazards to man, but, as I said yesterday, if we can see a possible hazards problem we will delve into it only far enough to find out whether there is a hazard. If there is obviously no hazard we quit worrying about it and don't try to refine the knowledge much further. I seems to me now that there is at least the possibility that in addition to hazards we might contami- nate the atmosphere or confuse other experiments, We are in no position to evaluate whether this is true or not true. trouble. We are willing to work with anyone who thinks that conceivably one of our flights would give him If you need any more information about what is planned for Rover and what the release rate might be, we will be happy to talk to you. There is some flexibility in the hazards business in terms of where one might try to release the activity--in the atmosphere or far.out in space. If this makes a difference to anyone, and it might, particularly in an area where we might dump 10 or 15 curies of some particular isotope, J think this would make some difference in the way we went about the hazards problem. I simply invite you to see us if you feel that there is any possibility of conflict between Rover and your experiments. Col. Barnes: Jim, Ihad one other small comment to make. This is extremely informal also because I can't give explicit details, but there will be strictly informal discussions this month in Italy with the Russians relative to whether it is feasible and proper to use reactors in space. this type of device. I don't know how faralong the Russians are with The discussions are under the sponsorship of the National Academy of Sciences. Dr. King: As I mentioned earlier, we hope to try to determine what sort of particulate material comes out of a rocket motor in its normal and abnormal operation. establishing the importance of such questions as: with other interests? I think the importance, possibly, in this meeting is in where does one dispose of this material? does it interfere at what altitude would one release this material? Another item that has been brought <a? materials,