KRS: A fast special-purpose database system

The K-Division Retrieval System (KRS) is a group of programs and files maintained by the Lawrence Livermore Laboratory to store and recall data about the geology and events at the Nevada Test Site. KRS consists of two large data files that are updated regularly with new information. This report describes these data files and the interaction necessary to use the specialized programs, obtain access to the information, and arrange the data reports. These programs are run on CDC-7600 computers and are available in public files.