Observers L. Joe Deal ° Assistant Director for Field Operations Division of Coerational and Environmental Safety U. S. Energy Research and Development Administration Tommy F. McCraw Division of Operational and Environmental Safety U. S. Energy Research and Development Administration Roger Ray Assistant Manager for Environment and Safety Nevada Operations Office U. S. Energy Research and Development Administration ' Paul B. Dunaway Director, Bioenvironmental Sciences Division NevadaeOverations Office U. S. Energy Research and Development Administration it. Col. Edwin T. Still, D.V.M., USAF Research Progrem Coordinator Armed Forces Radiobiology Research Institute Defense Nuclear Agency Bruce W. Wachholz, Ph.D. - Office of the Assistant Administrator for Environment and Safety U. S. Energy Research and Development Administration