SCR-420 TID-4500(16th Edition) HEALTH AND SAFETY BIOLOGY AND MEDICINE METEOROLOGY Proceedings of the Upper Atmosphere Sampling Symposium Part I Sandia Laboratory, Albuquerque, New Mexico April 11-13, 1961 Compiled by J. D. Shreve, Jr. (Part II, the classified portion of the Proceedings, will be published as SCR-421) July 1961