Characteristic Effects of Contained Nuclear Explosions for Evaluation of Mining Applications; This paper is to be presented at the Annual Meeting of the American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., New York, February 16 to 20, 1964

Preprint No. 64AU58. UCRL-7350 Rev. 1. September 12, 1963. Printed on one side only. v, 43 pages. Illustrations. Formulae. Tables/Tabular Data. References. Format is primarily 8.5 inches by 11 inches. Cover page and title page is a slightly smaller format that the remaining pages of the report. David D. Rabb was born Aug. 1, 1915, in Denver, Colo. He attended the University of Arizona, graduating in 1939. He served in the Army in World War II and retired as a Lt. Col. in 1977. Rabb worked in mining and metallurgy. In addition to working at the Lawrence Livermore National Laboratory, he worked for the Army Inspector General's Office, Battelle (Columbus); Arizona Bureau of Mines; and the University of Arizona. Abstract: Recent underground nuclear tests in tuff, alluvium, salt, and granite have yielded data essential to the evaluation of mining applications of contained nuclear detonations. The data indicated that for these media the cavity radius is predictable within +/- 20% without regard to the properties of the rock in the immediate shot environment. Properties of the chimney of broken rock resulting from collapse of the cavity, on the other hand, are found to be related to the properties of the rock and its preshot structural weaknesses. Seismic effects and radioactivity distribution are sufficiently documented to serve as a basis for predicting the safety conditions associated with detonations for a variety of yields. Preprint, believed to be one of a number of contemporary multiple copies.…