Other Chemical Hazards
Propane, which can be flammable and explosive, is used widely in residential, industrial, and agricultural settings, and large amounts of pressurized propane are commonly present at wholesale and even retail distribution points, as well as on the transport network.
- National Propane Gas Association: NPGA says that DOT contacted its Washington, DC, office after the WTC disaster to urge extra precautions and security, especially for transporters near cities -- but also for pipelines and storage facilities.
Chlorine, ammonia, and propane are often present in large amounts near densely populated areas. Roughly half of all hazmat incidents are actually transportation accidents -- a reminder of how the spread-out and undefended rail and road network offers special vulnerability to terrorists.