Pipeline accident report : San Juan Gas Company, inc./Enron corp, propane gas explosion in San Juan, Puerto Rico, on November 21, 1996 National Transportation Safety Board (NTSB) 1997 Öppna dokument
Long-range transport om ammonia released in a major chemical accident at Ionava, Lithuania Kukkonen J · Savolainen A L · Valkama I 1993 Öppna dokument