May/June 2001 Feature Articles: Investigation of Small Egyptian Mummies by 3D Computed Tomography - by M. Rossi, F. Casali, D. Romani In Search of Better Inspection Tools: Tank Car Insulation and Thermal Protection System Verification - by Gerry McPhee Technical Tips: Biodegradable Penetrants - Fowl or Fair Play - by John deLuca CGSB Certification Update Research Project: The Evolution of X-Rays - by Amanda Cooke-Simpson