ADDRESS OF WELCOME Cc. F. Quate Vice President, Research, Sandia Corporation Good morning, Gentlemen: It is with great pleasure that we welcome you to Sandia, We are pleased to be able to host this meeting as arranged by Mr. Holland of DBM. This conference is to deal in various ways with one of the most difficult areas of all nuclear energy--that of radioactive contamination of the atmosphere. I am certain that lack of knowledge on the part of our public contributes immeasurably to the difficulties we encounter in obtaining public acceptance of the many scientific programs which must be carried on to maintain the advances in this field. In addition to the scientific implications of the Upper Atmosphere Sampling program, there is further need for accurate information, I have heard people discuss the implications of using rather small sources of radioactivity--such as SNAP devices--for space probes and they are inhibited by the lack of acceptance of operating such devices in the atmosphere, There is even more need for accurate information to provide a basis for legislation on such items as hazards pay, site selection, and proper safeguards. I would hope that from this conference we will see a continued and increased program of effort in this important field,