Accidents and deaths have not been enough to spur regulatory change under the Bush administration. There have been 167 accidents in the past two decades, and 108 people were killed in 48 of the incidents.
All materials and processes have multiple hazards. However, it is highly unlikely that any alternative process will be inherently safer with respect to all hazards. So, optimization efforts must focus on identifying the design that gives the best overall combination of desirable characteristics.
For the most part, industry and government have worked well together to develop and implement assessments and tightened security measures. Late last year, however, a pair of situations arose that underscore some procedural differences between the two