Also in the toll: 47 dead and three million gallons of crude oil spilled. Very troubling:
Adding to the danger is the high volatility of the light, sweet crude from the fast-growing Bakken oil patch in Montana and North Dakota, where many of the trains originate. Because it contains more natural gas than heavier crude, Bakken oil can have a lower ignition point. Of the six oil trains that derailed and caught fire since 2008, four came from the Bakken and each caused at least one explosion.