Spill of undeclared shipment of hazardous materials in cargo compartment of aircraft National Transportation Safety Board (NTSB) 2000 Öppna dokument
Hazardous materials accident report : rupture of a railroad tank car containing hazardous waste near Clymers, Indiana, February 18, 1999 National Transportation Safety Board (NTSB) 2001 Öppna dokument
Railroad accident report : derailment of Burlington northern and Santa Fe company intermodal freight train S-CHILAC1-31, Crisfield, Kansas, september 2, 1998 National Transportation Safety Board (NTSB) 2000 Öppna dokument
Lessons learnt from tunnel accidents : NEDIES project Colombo Alessandro G. European Commission 2001 Öppna dokument