· NUCLEAR ENERGY—Expanding medical, industrial and research applications and upgrading reactor technologies for the generation of electricity, particularly using the breeder concept. · NATIONAL SECURITY—Production and administration of nuclear materials serving both civilian and military needs. ERDA programs are carried out by contract and cooperation with industry, university communities, and other government agencies. For more information, write to USERDA-Technical Information Center, P. O. Box 62, Oak Ridge, Tennessee 37830. [Illustration: ERDA Seal] United States Energy Research and Development Administration Office of Public Affairs Washington, D.C. 20545 Transcriber’s Notes --Retained publication information from the printed edition: this eBook is public-domain in the country of publication. --Where possible, UTF superscript and subscript numbers are used; some e-reader fonts may not support these characters. --In the text version only, text in italics is delimited by _underscores_. --In the text version only, superscript text is preceded by caret and delimited by ^{brackets}. --In the text version only, subscripted text is preceded by underscore and delimited by _{brackets}. --In the text version only, added a brief label to each illustration; and for graphs, provided tabular summaries of the data where possible. End of Project Gutenberg's The Atomic Fingerprint, by Bernard Keisch