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PEACEFUL USES OF NUCLEAR EXPLOSIVES (PLOWSHARE) 29 Produced by the USAEC's Lawrence Radiation Laboratory at the University of California. For sale by W. A. Palmer Films, at $53.52 per print, including shipping case, F.O.B. San Francisco. Available for loan (free) from USAEC headquarters, field li- braries, and from the Graphic Arts Department, Lawrence Radiation Laboratory, P. O. Box 808, Livermore, Calif. Cleared for television. This semitechnical film reports on Project Dugout, a chemical high explosive experiment conducted June 24, 1964, at the Nevada Test Site in the Commission's Plowshare Program. The experiment involved the simultaneous detonation of five 20-ton charges of nitromethane em- placed underground in a row. The principal purpose of the experiment was to advance fundamental knowledge of nuclear excavation technology and row cratering effects in a hard rock medium. The film describes the purpose and the objectives of the experiment, previous work with single-charge underground explosions, preparations for the detonation, the detonation, and resulting row crater. The moment of detonation is shown in regular and slow motion and from several vantage points. PROJECT GNOME (1963). 29 minutes, color. Produced by the USAEC's Lawrence Radiation Laboratory at the University of California. For sale by W. A. Palmer Films, at $139.83 per print, including shipping case, F.O.B. San Fran- cisco. Available for loan (free) from USAEC headquarters and field libraries. Cleared for television. Covers Project Gnome—the first nuclear detonation conducted under the USAEC's Plowshare Program for development of peaceful uses of nuclear explosives — from its planning stage through the early months of the post-detonation period when scientists entered the man-created cavern. Project Gnome was an experiment under the technical direc- tion of the Lawrence Radiation Laboratory involving the detonation on December 10, 1961, of a 3.1-kiloton nuclear explosive in a chamber about 1,200 feet below the earth's surface in the Salado Salt Basin, a thick subsurface salt bed about 25 miles southeast of Carlsbad, New Mexico. Force of the explosion created an underground cavern which today measures about 170 feet across and is almost 90 feet high. Temperatures within the cavity register about 140 degrees. Radiation levels are about five milliroentgens. Animation is used to explain the scope of Project Gnome and its integrated scientific and technical programs. Project Gnome, one of the most heavily instrumented nuclear detonations ever conducted, was designed to provide scientific and technical information on five objec- tives: (1) to determine characteristics and physical effects of under- ground detonations in a salt medium; (2) to explore feasibility of con- verting energy produced into electricity; (3) to make neutron cross-measurements which would contribute to scientific knowledge;