Chicago Transit Authority officials say they'll use torches to cut a commuter train apart as they remove wreckage from an underground station after a derailment.
They say the station at O'Hare International Airport could be closed until Tuesday.
Crews are inspecting the station's stairs and escalator, which were damaged when the train plowed across a platform and scaled the escalator around 3 a.m.
More than 30 people were hurt, but all of their injuries are considered non-life threatening.
Police say a commuter train derailed early Monday at the Chicago O'Hare International Airport, injuring about 30 people on board.