"This Case Study describes a catastrophic hydroxylamine (HA) explosion that occurred on February 19, 1999, at the Concept Sciences, Inc. (CSI), facility in Hanover Township, Lehigh County, Pennsylvania. Four CSI employees and one employee of an adjacent business were killed; 14 people were injured." Key issues discussed include: hazards of processing hydroxylamine, process hazards evaluation, and chemical facility siting.
Report No. 1999-13-C-PA
U.S. Chemical Safety and Hazard Investigation Board: http://www.csb.gov/