May/June 2003 Feature Articles: Concrete Deterioration: Detection By Ultrasonic Pulse Velocity Method - by N. Mohamed Sutan, M.S. Jaafar, S. Hamdan Code Case 2235-3 In Brazil - by E. Ginzel Products, Services or Supplies Accept/Reject Criteria Of High Pressure Steel And Aluminum Gas Cylinders - by Mark Toughiry, John Smith, H. Thomas Yolken, Chris Coughlin Certification News (LPI & MPI)