Two state inspectors have been sent to Maine's Sugarloaf ski resort to find out what caused a ski lift to fail Tuesday, plummeting five chairs 25 to 30 feet.
Eight people were taken to hospitals, including three children.
Officials say it's unclear if the accident was mechanical or wind-related.
The chair lift, which is 35 years old, started the day on a "wind hold" because of blustery weather.
But Sugarloaf officials later decided it was safe to operate.
They say the lift recently passed state inspection, and is inspected daily as well.
One woman who survived the fall says most of the victims seemed okay.
She says they were cushioned by 20 to 22 inches of new snow.