Crews put derailed Amtrak cars back on track Tuesday, and investigators probed whether summer heat could have contributed to the accident that sent a passenger train plowing off its rails and injured 101 people.
The derailment Monday afternoon sent bleeding passengers crawling out windows and left a 150-yard stretch of twisted rails and ties ripped from the gravel bed.
Seventeen of the 101 people were admitted to hospitals and the others were released after treatment, Amtrak spokeswoman Karina Van Veen said Tuesday. The train was carrying 161 passengers and a crew of 13, she said.
Workers used cranes to pick up six of the 11 derailed cars and put them back on the tracks, she said. The two engines and some train cars were taken to Washington's Union Station, the train's destination.
Two event recorders had been recovered from the train, said Carol Carmody, National Transportation Safety Board vice chairwoman. The recorders, similar to ``black boxes'' on airplanes, provide information including speed and what the engineer was doing, such as braking or throttling.