A gap in the brick remains where a section of wall at the former U.S. Displinary Barracks complex collapsed Monday morning, injuring a contractor working on the ground below. The collapse occurred as a construction crew poured concrete from the inside of the building, on the third floor. The injured man was trapped under a pile of bricks and wet concrete for about two hours before being rescued and taken to an area hospital.

A gap in the brick remains where a section of wall at the former U.S. Displinary Barracks complex collapsed Monday morning, injuring a contractor working on the ground below. The collapse occurred as a construction crew poured concrete from the inside of the building, on the third floor. The injured man was trapped under a pile of bricks and wet concrete for about two hours before being rescued and taken to an area hospital.

Fort Leavenworth ? A civilian contractor was rescued and taken to an area hospital Monday morning after he was trapped for about two hours beneath rubble from a partially collapsed wall outside a building at Fort Leavenworth.

The man was taken via helicopter to an area hospital with injuries that were not life-threatening, said Army medic Jeremy Warren. No one else was injured, Warren said.

Fort Leavenworth officials did not identify the man.

The collapse occurred as contractors were renovating the former U.S. Disciplinary Barracks complex, a building constructed more than 120 years old that has been vacant for about 10 years, post engineer Bill Waugh said. The building is being renovated to provide offices or classrooms, Fort Leavenworth spokeswoman Rebecca Steed said.

Waugh said a construction crew was pouring concrete on the interior side of the wall from the third floor of the building about 9:30 a.m. when the top portion of the wall collapsed, tumbling toward the outside. The worker, who was on the ground, was trapped under bricks and wet cement that fell, Waugh said.

Warren, the Army medic, said that when he arrived on the scene shortly after the collapse, the trapped man’s head and shoulders were visible in the rubble, and he was conscious.

“We just started grabbing handfuls of rubble, trying to get it away,” Warren said.

The construction site was shut down after the collapse, Waugh said, as the U.S. Army Corps of Engineers took control of the area to investigate the accident.