1.   Forty-five people were injured when a passenger train derailed near Ottumwa, Iowa.

2.   Three bolts worked loose and caused the train to derail.

3.   No-one knows why the train derailed.

4.   The train derailed in heavy snow.

5.   Amtrak said in a statement that the two-engine train derailed on tracks owned by CSX Corp.

6.   A Chicago-bound Amtrak passenger train derailed in this rural town early on Wednesday, sending several cars hurtling down an embankment into pitch-black chaos.

7.   A Chicago-bound Amtrak passenger train derailed in this rural town early Wednesday, sending nine cars hurtling down an embankment into pitch-black chaos.

8.   A train derailed, an airplane crashed and a construction site blew up.

9.   By Wednesday night, there was no clear explanation of why the train had derailed and struck the central pillar supporting the road-bridge.

10.   Four people were killed last Thursday when an Amtrak train derailed in Florida.