CSB: Fatal explosion came after company ignored warnings
NDK Crystal received special exemption from state of Illinois
An explosion which occurred December 7, 2009, at the NDK Crystal manufacturing company in Belvidere, Illinois, fatally injuring a truck driver at a nearby gas station on the Illinois Tollway, resulted from corrosion in the walls of a pressure vessel, which went uninspected for years. The U.S. Chemical Safety Board (CSB) released those findings last week in a draft investigation report.