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FUELS. PROCESSING, AND METALLURGY 17 the simple systems of mechanical vibration, including spring mass, viscous coulomb, and solid damped systems. The various types of damping are illustrated by live demonstrations and animation. In addition, animated mathematical examples by Fourier are used to illustrate irregular forcing functions and their effects on engineering structures. The mathematical approach to solving composite dis- placement vibration problems is also discussed. FUELS, PROCESSING, AND METALLURGY ADVENTURES IK METALLURGY (1957). 22 minutes, color. Produced by the Hanford Atomic Products Operation, General Electric Company, as contractor for the USAEC at Hanford Works, Richland, Washington. For sale by Byron Motion Pic- tures, at $71.89 per print, including shipping case, F.O.B. Washington, D. C. Available for loan (free) from USAEC head- quarters, field libraries, and Hanford Atomic Products Opera- tion, Richland, Wash. Cleared for television. [NOTE: This film is slightly longer but similar to the 17-minute film, "Microdeformation of Uranium," which is also available for loan, see page 21.] This technical film, primarily of interest to metallurgists, is a study of the room-temperature deformation and fracture in uranium as seen in the optical microscope. Strain energy accelerates the formation of uranium oxide film on the specimen's surface. As a result, the microstructure is revealed by interference colors that facilitate interpretation. CERAMIC FUEL FABRICATION DEVELOPMENT FOR PRTR (1962). 26V 2 minutes, color. Produced by the Hanford Atomic Products Operation, General Electric Company, as contractor for the USAEC at the Hanford Works, Richland, Washington. For sale by W. A. Palmer Films, at $144.12 per print, including shipping case, F.O.B. San Francisco. Available for loan (free) from USAEC headquarters and field libraries. Cleared for television. This film gives a detailed technical explanation of three processes developed by Hanford laboratories for the fabrication of UO 2 fuel elements used in the Plutonium Recycle Test Reactor (PRTR). A brief summary of the purpose and history of the PRTR introduces studies of cold swaging, hot swaging, and vibrational compaction. Four significant phases of the fabrication processes are detailed in live and animated sequences: (1) ultrasonic testing of cladding tubes; (2) swaging to increase the bulk density of contained UO2 powder; (3) magnetic-force resistance butt welding of fuel-rod end caps; and (4) final inspection