July/August 1997 Feature Articles: Phase Analysis in Pulsed Thermography - X. Maldague, J.-P. Couturier, A. Salerno, D. Wu Safety: Working in Confined Spaces - Eric LeBreton Vintage Aircraft Restored Historic Lancaster Aircraft Reference Blocks and Reflectors Used In Ultrasonic Examination of Steel Components / Blocs d'étalonnage et réflecteurs utilisés lors de l'inspection ultrasonore de composants en acier - P. Ciorau, D. Macgillivray, D. Jansen, N. Dubé, A. Lamarre