The seventh ASTM International Symposium on Effects of Radiation on Structural Materials was held in Gatlinburg, Tenn., 11-13 June 1974. Committee E10 on Nuclear Applications and Measurement of Radiation Effects sponsored the symposium. C. J. Baroch, Babcock and Wilcox Company, presided as symposium chairman, and F. R. Shober, Westinghouse Hanford Company, served as symposium co-chairman.