During the past dozen years, refractory metal structural alloys have been advanced to commercial availability under the auspices of government-supported programs. Further technical progress is feasible, and is likely to be supported on a selective, need-oriented basis. To assess the latest state-of-the-art information, thereby guiding current applications and future research, invited papers were presented at a Symposium on Metallurgy and Technology of the Refractory Metal Alloys, sponsored by the Refractory Metals Committee of The Metallurgical Society (IMD) and the National Aeronautics and Space Administration. The Symposium, held in Washington, D. C. on April 25 and 26, 1968, was organized into four sessions covering critical analyses of selected topics in (1) physical and mechanical metallurgy, (2) reactions with gases and liquids, (3) applications and technology and (4) alloy development. Papers listed in the reference section will be published in a proceedings volume, fifth in the series documenting Refractory Metal Committee Conferences. Some aspects of the papers are presented in the following pages. However, interested readers should study the symposium publication, when issued, for a comprehensive treatment. The Proceedings volume will be published by Plenum Publishing Corp., 227 West 17th Street, N. Y., N. Y. 10011, sometime in Mid-October.