Engineering Disasters 20 - S13.E56

Engineering disasters are recalled. Included: a 2005 explosion at a BP refinery in Texas City, Texas; the American Airlines flight 587 crash in 2001; the 1982 dioxin scare in Times Beach, Mo., where dioxin was found in oil used to keep down dust on the roads; and a 2005 fire at the Praxair plant in St. Louis.